What on Earth? - Episode Guide

A massive tsunami hundreds of feet high that never touches land; a huge sinkhole in Florida; a secret underground base in China; a lake of blood in Baghdad.

Strange barren rings in the Namib desert; An island the size of Manhattan disappears without a trace; a lost city in the middle of the Amazonian jungle; a strange image from Area 51.

How the Eye of the Sahara, a beautiful 25 mile structure, is formed remains a mystery; incredible clouds emanating from an island in the Indian Ocean could be evidence of a terrigying new weather weapon.

NASA astronaut Mike Barratt on the International Space Station photographs a strange ring in the ice on Lake Baikal, the world's oldest, deepest, and most mysterious lake; more rings have appeared. Studying a satellite image could hold the key to the location of Sodom and Gomorrah. A vast cloud-like plume travels over New Mexico into Texas.

A possible smoke screen over North Korea concerns military analysts; an amateur archaeologist makes a fantastic discovery of not one but two forgotten pyramids in Egypt.

Strange images of craters in a line across Missouri; Strange satellite images of lights at night in uninhabited areas of Australia and the Dakota's in the U.S.; Possible Nazi fortress in Antartica; Possible ancient trade route that may lead to the lost city of Ubar; Strange hexagonal shaped cloud formations near the Bahamas.

Desperate signs from lost veterans in Vietnam captured by satellite. A fleet of massive ships stranded in the middle of a vast desert. Strange walls stretching vast distances across Northern California. Just what on earth are they?

Satellites find American stealth technology deep inside China; an unidentified cloud swamps America's skies; something very large is lurking beneath Loch Ness.

Satellites locate strange spiral markings in the remote African desert; A strange black blob off the coast of Florida. Satellites observe a possible murder. Something massive found deep beneath the ice of Antarctica. Just what on earth are they?

A satellite spots a set of huge arrows in the badlands of the American west. A blood red waterfall stains Antarctica's snows. A plague of huge holes in the Siberian landscape. Just what on earth are they?

The face of Christ is found in a field in Hungary. A photo that claims to show who shot down a passenger jet in Ukraine. A sinister shape in the mountains of Afghanistan that leads investigators to a hidden genocide. Just what on earth are they?

A strange structure is found in Mongolia. Is it the lost tomb of Genghis Khan? Bizarre rings in Spain could lead to the lost city of Atlantis. A huge floating island is on a collision course with New Zealand. Just what on earth are they?

A US spy satellite may have sumbled upon Noah's Ark; NASA may have found the Garden Of Eden; possible evidence of the destroyed city of Sodom.

Satellites find a great scar in the desert, it might be the key to finding the last wonder of the ancient world; Clues to the location of infamous City of Gold, El Dorado.

A collection of military mysteries; Satellites find stealth technology deep in China; Signs of MIA's in Vietnam, Strange smoke clouds over North Korea, Strange mountain fortress in Russia.

Satellites locate strange spiral markings in the remote African desert; a fleet of massive ships stranded in a desert of drying Aral Sea; large arrows in the badlands of the American west.

An odd structure that could be the lost tomb of Genghis Khan; mysterious dead patches in the desert that science can't explain; eerie sights in one of the world's oldest and strangest lakes.

Mysterious sightings in the Bermuda Triangle that could solve an age-old legend; a huge tsunami is heading straight for Hong Kong, then suddenly disappears.

A strange blood trail leads a satellite investigation; odd spirals appear in the Kalahari desert; a bizarre pattern off the coast of South Korea.

Strange spots near the Grand Canyon may hold clues to the legendary treasure of a notorious bandit; satellite images could explain desert ruins rumored to be an entrance to an underworld; city-size chunk of ice suddenly disappears in Antarctica.

A giant carving of a strange creature suddenly appears in the Australian Outback; mysterious bright green lights illuminate the seas around Thailand; top-secret activity discovered at Iran's nuclear facility.

Strange black holes appear near Egypt's ancient pyramids, and new evidence points to a disturbing conclusion. Ruins in Peru suggests that the Inca people knew far more than previously thought. A mysterious red swarm invades a beach in India.

Legends of ancient giants surround a mysterious monument in the Holy Land. A bright pink lake could point to a strange, undiscovered new species. When a young boy disappears in a sand dune, satellite images help with the investigation.

Investigators find a new clue about the missing Malaysia Airlines flight that disappeared in 2014; an astronaut spots something strange in the Sahara Desert; a mysterious orange sludge invades a remote village in Alaska.

A buried monument offers new evidence about one of the Bible's greatest mysteries; an ominous shadow engulfs the Pacific Ocean; scientists have trouble explaining a strange lake that's shaped like a perfect circle.

A dagger sealed in King Tut's tomb for more than 3,000 years is made of a metal that seems to have extraterrestrial origins. A massive swastika is found in the desert near Roswell, NM. Satellites hunt for the world's most wanted man, Joseph Kony.

A heavily armored force takes over one of Syria's most ancient archaeology sites, prompting fears that its relics are being stolen; tanks appear to be facig off in Antarctica next to an unworldly object; a water reservoir in LA suddenly turns black.

A giant swastika appears in a forest in Germany; a strange pattern is etched into the desert near the famous Nazca lines, but archaeologists don't know who put it there; mysterious markings are spotted in an isolated corner of Antarctica.

Satellite images reveal how El Chapo escaped from a high security prison in Mexico; mysterious patterns in the Australian outback and the Kalahari Desert spark a major scientific investigation; a giant black stain appears in a war-torn area of Iraq.

A giant letter Z is carved into a Mexican hillside, evoking the mark of a legendary outlaw, Zorro; a strange sighting in Germany points to secrets from the Cold War; massive, blood-red marks in China prompt fears of a violent government crackdown.

A strange mass breaches surface of an ocean near Antarctica, sparking rumors of a mythological sea monster; an area of the US-Mexico border becomes an international mystery; ancient rock carvings in a remote mountain range depict unearthly beings.

An amateur archaeologist finds strange symbols scratched into the Kazakhstan desert; CIA surveillance photographs show what appears to be a giant Star of David on the island of Cuba; a lake in the Brazilian rain forest turns bright pink.

A vast structure buried in the sands near the legendary city of Petra points to a bloody past; when terrorists kidnap more that 200 schoolgirls in northern Nigeria, rescuers use satellites to track them down.

New evidence could lead to the discovery of an unknown ancient civilization in the Amazon rainforest; an island disappears and investigators are mystified; an unidentified submarine is spotted in a North Korean shipyard.

A massive chasm appears in a remote part of the Siberian forest and locals call it a gate to the underworld; images of a nuclear missile launch silo in Montana are being manipulated; a bright green spiral appears in the Persian Gulf.

Strange images from the jungles of Colombia could lead researchers to the legendary city of El Dorado; a bright green swirling spiral appears in the seas of the Persian Gulf; a massive complex suddenly appears in Myanmar.

New evidence could reveal the remains of an ancient Roman city thought to be lost forever; strange images from a remote and empty desert could explain the mysterious mummies found there; an apocalyptic sandstorm swallows the Middle East.

A young boy makes international headlines when he uses satellite images to discover lost cities of the Maya; satellite images might point to a modern-day genocide; trees in China seem to be spellng out a sinister message.

The myth of Merlin is associated with an arrangement of stones in northern France; satellite images might finally explain this ancient riddle; Investigators uncover something mysterious buried beneath the Gulf of Mexico.

Strange mounds in Transylvania might pinpoint the location of the tomb of the bloodthirsty tyrant believed to have inspired Dracula; a mysterious ancient city is discovered on a coral reef; images of a plane crash set off a hunt for a drug lord.

A strange structure shaped like a giant shark might point the way to a lost civilization's fountain of youth; a massive hurricane heads toward Florida but something unexpected is in its eye; bizarre marks across the eastern U.S. leave experts baffled.

A ghost ship with links to the mob suddenly appears on a California beach; strange markings could be a coded message that reveals a plot to overthrow the Queen of England; a lake believed to have magical healing powers holds clues to life on Mars.

A ghost town covered in a strange, white power emerges from a lake in Argentina; upon the discovery of a lost jungle in Africa, scientists embark on a dangerous mission to explore it; a declassified CIA image uncovers a bizarre, giant Soviet weapon.

A strange forest of razor-shape stones could be home to an undiscovered Hobbit-like humanoid species; when a man-made island mysteriously appears off the US coast, new evidence points to secret government experiments into psycho-chemical warfare.

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler. New data from NASA satellites might reveal a sunken lost continent in the Indian Ocean. A pit of bodies suggests fears of a zombie nightmare.

A strange lake in Transylvania is the home of an abandoned village and a terrifying secret. When an labyrinth is discovered on an island once home to an ancient Greek civilization, experts investigate if it was the legendary home of the Minotaur.

A lost city near Jerusalem might have been the home of Goliath; bizarre underwater formations might point to a top-secret US weapons testing facility; a strange sighting in the Arctic could be a lost Nazi relic.

An abandoned megacity in a remote jungle might be the home of an ancient treasure and a dark secret; when a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.

Evidence of human sacrifice for the Viking god Odin; shedding new light on Genghis Khan.

New evidence might finally identify the hiding place of the billion-dollar Nazi gold train; a discovery of a long-lost settlement rewrites the history of the Vikings in North America; a blood-red river in Siberia points to catastrophic pollution.

An ancient man-made volcano might reveal buried treasure and bloody human sacrifice; when NASA discovers a strange pattern in the Arctic ice, experts investigate if it has alien origins; a mystery in the Sahara might have a sinister explanation.

Man-made islands are spotted near a North Korean missile facility; an unexpected find in a remote desert leads experts to a lost city of giants; a strange discovery in Siberia suggests a secret mission to the center of the Earth.

An abandoned city in the African jungle may be haunted by the malevolent spirits of cannibals; Mount Vesuvius shows signs of an awakening, and the mafia could be to blame; experts investigate Adolf Hitler's secret Nazi UFO program.

Researchers investigate a strange glowing lake reported to turn things into stone; a structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

A mysterious Stonehenge-like structure in Russia may have links to the Nazis; experts uncover clues to a mega-tsunami with the power to devastate the United States; a huge lake appears in the Sahara overnight.

New discoveries lead investigators to a crypt rumored to hold the Ark of the Covenant; when a great white shark is killed, experts suspect a mysterious ocean monster; strange markings in the desert might be a tribute to an ancient spider god.

Treasure hunters have searched for a lost Incan city of untold wealth for a century, but new technology might finally locate its riches; a strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

A ghost ship is found abandoned on a remote island that's home to one of the world's last uncontacted tribes; a strange labyrinth in Sicily might have a sinister connection to the Mafia; new evidence reveals a mysterious military compound in Russia.

New evidence might reveal how the Mayans vanished; when scientists investigate an abandoned settlement, they discover traces of ritualistic drug binges from the ancient world; a mysterious symbol in the desert points to a sex cult of millionaires.

Something strange in the Himalayas could be evidence of a top-secret CIA program to turn monks into killer agents, and cutting-edge science helps experts investigate the truth behind this mysterious anomaly.

Alien monoliths haunt the coast of England. An obliterated jungle points to a brutal narco gold rush. Evidence of a strange blood-red creature emerges from the deep on Christmas Island. A terrifying wall of ice avalanches in western Tibet. Cutting-edge technology helps experts answer these sinister mysteries from space.

A satanic symbol points to an army of the dead in Siberia. A massive stone giant in a remote desert. Evidence of a Russian doomsday device right on America's doorstep. Cutting-edge technology helps experts answer these sinister mysteries from space.

Zombie reindeer haunting the mountains of Norway. Strange circles in the sand by a secret US military base. A gigantic streak in the Arctic pointing towards alien life. Cutting-edge technology helps experts answer these sinister mysteries from space.

A fleet of sunken ships points to ghosts, cannibals, and bloodshed in early America. Strange Arctic holes that NASA can't explain. Near Area 51, mysterious alien structures straight out of Star Wars. Cutting-edge technology helps experts investigate.

New discoveries from space give experts new clues in the hunt for Jack the Ripper. When a strange object crash-lands in Antarctica, experts speculate it could be an alien visitor. Cutting-edge tech helps experts answer these sinister mysteries from space.

Hundreds of shipwrecks in the middle of a desert in Africa. A ghost town where hundreds of its inhabitants have mysteriously died. Something strange in North Korea. Cutting-edge tech helps experts answer these sinister mysteries from space.

A site that could be the Garden of Eden hides a deadly secret. When a gateway to hell suddenly opens, experts investigate where it leads. A mysterious shipwreck could be an infamous Soviet KGB pirate ship.

Evidence of a mysterious 5,000-year-old structure suddenly appears in Ireland. A top-secret machine that can see back in time. A satanic pentagram in the snow that points to witchcraft in the New World.

A strange circular forest next to a notorious cannibal site. When an eerie crater is spotted in Siberia, experts uncover if it could be evidence of Nikola Tesla's doomsday device. Cutting-edge tech helps experts answer these sinister mysteries from space.

The world's most dangerous threats are in top-secret locations all over the planet, and using cutting-edge technology, experts reveal the truth behind these sinister mysteries from space.

An abandoned ghost town in a remote desert with a dark past. When a strange facility is spotted in Russia, experts investigate if it's hiding evidence of alien life. Cutting-edge tech reveals new clues to these sinister mysteries from space.

When satellites spot a mysterious structure in North Korea, experts investigate if this sinister evidence points to a looming nuclear threat, and using cutting-edge tech, they reveal dark secrets from this strange place.

When a strange pattern appears in a field, experts wonder if its an extraterrestrial response to a message sent to an alien star cluster in 1974, and using cutting-edge science, they uncover its true meaning.

When a sinister cave is discovered in a remote corner of Iceland, experts uncover a secret underworld tunneling to unknown depths, and using cutting-edge tech, they investigate if this strange place could hold secrets of alien worlds.

In the white ice of Antarctica, satellites discover a mysterious trail of sinister black objects, and when experts discover that it's moving, they use cutting-edge tech to investigate who or what is behind this strange phenomena.

When a strange structure is discovered in the Gobi Desert, experts investigate if this mysterious site could reveal the whereabouts of lost treasure, which might change everything we know about Genghis Khan and the Mongol warriors who once lived here.

When a strange, red plane is discovered near the sight of the Roswell UFO incident, experts wonder if the aircraft has Nazi or extraterrestrial origins, and their investigation reveals new secrets about one of America's most famous faces.

At a mysterious site in the Gobi Desert, experts have discovered a monster graveyard, and this groundbreaking find contains the treasures of the alien beasts that once lived in this strange world.

When mysterious structures are discovered deep in a remote forest, experts investigate if this strange site was the long-lost birthplace of a top-secret Nazi project that produced some of the deadliest weapons the world had ever seen.

When instruments on the International Space Station suddenly malfunction every time it passes over a mysterious site in the Atlantic Ocean, experts investigate if this eerie behavior is more than just a tech glitch, but a prophecy of global doomsday.

When strange circles of reindeer appear in the remote tundra of Sweden, experts investigate if this mysterious event could be evidence of fatal aftershocks from the Chernobyl nuclear disaster.

When an island off the coast of Mexico suddenly disappears, government officials scramble to find an explanation; cutting-edge technology might reveal if the strange place was destroyed by a foreign power or if it existed at all.

When the people of a thriving Midwestern town suddenly disappear, they leave behind an eerie ghost town with a dark secret; experts use cutting-edge tech to investigate if the mysterious exodus could be evidence of a freak natural disaster.

When satellites spot anomalies in the unexplored Amazonian jungle, experts wonder if they've discovered relics of a lost civilization; an on-the-ground investigation reveals a dark truth that's more sinister than ever imagined.

When satellites discover a strange abandoned city frozen in time, experts investigate what caused the people who lived here to disappear overnight; using cutting-edge tech, they follow fresh leads to uncover if this mysterious city has a dark secret.

After satellites spot an anomaly near the Step Pyramid of Djoser, Egypt's oldest pyramid, experts uncover a long-lost labyrinth that could lead them to the darkest secrets of Imhotep, the mysterious high priest who built this strange complex.

Strange satellite images taken above the Nile Valley could point investigators to long-lost relics buried in an unexplored city of the dead; what they find could reveal new secrets of Kush, a once-mighty kingdom of untold gold and treasure.

New satellite evidence reveals a mysterious spiral structure from space, and experts speculate that it could be the lost city of Atlantis; using cutting-edge technology, they investigate the truth behind this strange phenomenon.

When an extreme drought hits Spain, the ruins of a long-lost civilization suddenly emerge, and using cutting-edge technology, experts investigate evidence of ancient cannibalism.

Satellite images capture evidence of an abandoned town hidden in the American wilderness, and as experts analyze this new evidence, they reveal what this strange place has to do with a top-secret military plan to battle an army of the undead.

Crop circles spotted on an island in the Mediterranean might not be from aliens, but from a threat closer to home: Nazis; new discoveries help experts uncover who made them and for what sinister purpose.

Satellite images capture a volcanic island that suddenly appears in the Pacific Ocean. When NASA scientists arrive to investigate, they are baffled to find it's home to a primordial slime and zombie creatures with origins in outer space.

Satellite images capture evidence of a mythical lost pyramid in China that's been hidden for centuries, and experts suspect it could be just one of many unknown structures used as a secret military base designed for subterranean nuclear warfare.

The remains of an abandoned settlement high in the mountains of Peru could be an ancient Roman village, leaving experts to speculate if the Romans visited the Americas centuries before Columbus; if so, it could point to long-lost gold.

Mysterious satellite images lead an archaeologist to investigate a cemetery on Devil's Island, the notorious penal colony in the tropics of South America; what he finds there reveals evidence of grisly executions that fueled a shark feeding frenzy.

Satellites capture a temple-like, Nazi structure hidden deep in the forests of Poland, leading an expert to investigate and uncover a tale of terrifying rituals, black magic, and the rise of the most feared division of Hitler's war machine.

Satellites capture two strange patterns in the desert, and they are right next to Area 51; experts use cutting-edge science and new revelations from declassified documents to reveal what they are and what they mean.

When satellites spot a strange, 2,000-year-old structure in Wales, some suspect a secret connection to King Arthur; using modern-day technology and ancient texts, experts investigate new leads that could point to the mythical Round Table.

When investigators spot strange anomalies in the Amazon jungle, the discovery stokes rumors of a long-lost Nazi base in the Americas.

Satellite evidence of a strange building on a mysterious island owned by Jeffrey Epstein points to something sinister; experts use cutting-edge technology to investigate why it was built and what goes on here.

When satellite images spot a strange white substance in the land of the Aztecs, experts investigate the site for extraterrestrial connections; what they find could explain the rise of one of the world's greatest civilizations.

New evidence reveals dozens of bizarre circular structures buried in the remote hills of Norway; an expert investigation uncovers a mysterious burial ground that may have been a portal to the Viking spiritual realm. 

Satellite images capture bizarre structures in the remote and inhospitable swamplands of Louisiana; experts investigate a forgotten war-torn fortress with a mysterious connection to the sinking ruins of a classified military installation. 

Satellite images reveal a long-lost village buried in a dense forest; archaeologists investigate and uncover a mysterious gravesite with the remains of decapitated skeletons and possible evidence of vampire burials.

Satellites capture evidence of a mysterious structure in a remote and rocky area of Hawaii, and when experts investigate, what they find could point to human sacrifices and the wrath of a shape-shifting god. 

When a gigantic ship emerges from the sands of a strange island, experts investigate; what they find reveals evidence of a horrific Viking massacre. 

When experts spot what appears to be an abandoned city in the Caspian Sea, they investigate declassified Cold War evidence to reveal an Atlantis-like city built by the Soviets; what they find exposes its long-lost secrets. 

Satellite images reveal a mysterious pattern of six perfect circles hidden in the desert landscape of New Mexico; experts investigate and uncover evidence of catastrophic military testing deliberately erased from history. 

Satellite images capture a giant symbol mysteriously carved into the expanse of Australia's Great Victoria Desert; an investigation reveals a secret nuclear weapons-testing cover-up by the British government with numerous aboriginal casualties.

Satellite images capture unsettling evidence behind zombie graveyards, enigmatic ghost towns, and unexplained death cults; experts use cutting-edge technology to investigate and reveal the dark truth behind these menacing mysteries of evil.

Satellite images capture bizarre groups of circular structures in the remote forests of Derbyshire, England; experts investigate and uncover ancient burial mounds linked to a Viking invasion that changed the course of English history.

Satellite images capture mysterious stone structures spread across high elevations of the Arizona mountains; experts investigate and uncover ruins of a 19th century Apache fortification linked to the most treacherous migrant route in U.S. history.

Satellite images capture a strange castle-like structure hidden in Scotland's dense and remote woodlands; expert archaeologists investigate and uncover an area with a bloody history linked to the birthplace of the world's oldest secret society.

Satellite images capture a bizarre pattern of rocks in the shape of a large fingerprint on a remote Swedish island; experts investigate and uncover a mysterious labyrinth with links to ancient Viking black magic and dark, mystical rituals.

Satellite images capture a bizarre pattern of large concentric circles formed in a remote English forest; experts investigate and uncover a top secret experimental bomb testing site critical to WWII British weapons development.

Aerial drone imaging captures a sophisticated complex of lost, ancient Roman buildings in Yorkshire, England.

Satellite images capture a gigantic oval among a bizarre grid pattern that's carved into the dense forests of New Jersey; experts investigate and reveal a landscape linked to infamous prohibition activity and a prolific WWI munitions factory.

Satellite images capture a mysterious collection of sprawling towns that appear to be completely unoccupied in Belarus; experts investigate and uncover a horrendous state-sanctioned cover-up responsible for claiming thousands of innocent lives.

Satellite images capture a bizarre, cone-like structure perched on the summit of a mountain range in Turkey; experts uncover one of the most extraordinary engineering projects of the ancient world linked to the legacy of a living deity.

Satellite images capture a bizarre industrial complex in the remote desert expanse of Kazakhstan. Experts investigate and uncover a massive hangar containing a Buran or  Soviet space shuttle, the most expensive spacecraft in the history of Soviet-era space exploration.

Satellite images capture dozens of perfectly straight parallel lines hidden in the dense Polish woodlands of Silesia. Experts investigate and uncover a massive WWII military complex once used as a notorious and deadly Nazi weapons training facility for developing the MP44 Sturmgewehr machine gun and training the 13th Waffen SS Mountain Division.

Satellite images capture bizarre structures fenced within a remote mountaintop complex on the Greek island of Kefalonia; experts investigate and discover a network of massive satellites linked to a hidden NATO doomsday communications bunker.

Satellite images capture monumental ruins surrounded by bizarre feather-shaped structures on a Welsh mountaintop; experts investigate a hidden tunnel containing the remains of an abandoned slate mine with an exploitative and deadly past.

Satellite images capture a triangular castle-like tower, a Nuraghe, located on the Mediterranean island of Sardinia; experts investigate these relics of the declining, ancient Nuragic civilization that may have suffered a celestial catastrophe.

Satellite images capture the Hill of Tara, two conjoined circular structures embedded in Ireland's lush and rolling landscape. Experts investigate the ancient site used to crown the legendary High Kings of Ireland at the Stone of Destiny and the elusive hunt for the Ark of the Covenant by the British Israelites in the 1890s.

Aerial drone imaging captures oddly shaped industrial-sized towers mysteriously situated in a forest clearing near Moscow; experts investigate and uncover a lost Soviet-era military compound and the development of a catastrophic electromagnetic weapon.

Satellite images capture a series of enormous zigzagging patterns carved into the remote woodlands of Poland; experts investigate a clandestine Nazi base linked to a doomed operation that played a pivotal role in the downfall of WWII Germany.

Aerial drone imaging captures clusters of enormous, perfectly round holes scattered along the coast of the Dead Sea in Israel; experts reveal a history of destructive water diversion linked to massive sinkholes devouring the region.

Aerial archaeologists capture bizarre, spider-like markings etched deep into the mountains of Northern Spain; experts investigate an ancient site that contained one of the largest and most important gold mining operations of the Roman Empire.

Satellite images capture a bizarre pattern of enormous circular clouds obscuring the Spanish island of La Palma in the eastern Atlantic. Experts investigate the 2021 Cumbre Vieja volcanic eruption and uncover evidence of an unfolding natural disaster that could potentially threaten millions of lives.

Aerial archaeologists use laser imaging to capture a distinct star-shaped pattern carved into the marsh of a Florida swamp; experts investigate and reveal a lost Civil War fort linked to an extraordinary community with a tragic past.

Satellite images capture a large compound of abandoned structures overgrown with vegetation in Clark County, Indiana. Experts investigate and uncover the Indiana Ordnance Works, a derelict WWII munitions factory that played a crucial role in US military history, producing smokeless gunpowder. In 1964, its name changed to the Indiana Army Ammunition Plant.

Aerial drone imaging captures a circular man-made structure that appears to be centuries-old in the remote forests of Aydin Province in western Turkey. Experts investigate a lost ancient Roman amphitheater with a history steeped in gladiatorial bloodshed.

Satellite images capture a mysterious fortification concealed beneath a patch of woodland in the remote stretches of Norfolk, England. Experts investigate rival royal families and Gresham Castle, a lost castle destroyed during a medieval blood feud.

Satellite images capture miles of aircraft precisely arranged in the vast Arizona desert. Experts investigate the largest aircraft storage facility on Earth and the rotting remains of a defining moment in Cold War history.

Satellite images capture an enormous X shape mysteriously carved with precision in the remote Nevada desert; experts investigate a military emergency landing field linked to one of the most astonishing test programs in aviation history.

A ghost ship appears overnight on the shores of Ireland. Could it help shed light on the fate of vessels claimed by the most notorious patch of ocean on earth?

Satellite images capture a mysterious group of pyramid-shaped structures in Arizona's arid, desert landscape. Experts investigate Biosphere 2, a highly controversial research facility designed to prepare humanity for life on another world.

Aerial archaeologists capture a series of mysterious dots buried beneath the remote, frozen landscape of Finnmark, Norway. Experts investigate and reveal revolutionary reindeer hunting techniques using trapping pits developed by the Sámi, the oldest surviving indigenous Norwegian tribe.

Observers spot bizarre markings from space in deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Strange images prompt major scientific investigations; new evidence offers hope to solving international mysteries. Mystery of a undiscovered site at Petra; A satellite views a car that appears to defy gravity; Strange markings in a mountain range in Russia; School students that disappeared in Africa.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

New evidence could reveal the remains of an ancient Roman city thought lost forever; strange images from a remote and empty desert could explain the mysterious mummies found there; an apocalyptic sandstorm swallows the Middle East.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Views from space reveal bizarre markings in oceans and deserts; strange sightings suggest conspiracies that could have global repercussions.

Views from space reveal bizarre markings in oceans and deserts; strange sightings suggest conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizzare markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. Strange walls in California, ships in a desert, markings in a jungle, a satellite image of North America that looks like a massive continent wide wildfire, Destruction of Sodom and Gomorah.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Strange satellite photos point to the dark final secrets of the Nazis; a mysterious base in Antarctica; a giant Swastika carved into a forest in Germany; a sinister World War II spy code etched into the British countryside.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Strange images point to apocalyptic prophesies of doomsday; a top-secret nuclear arsenal in Russia; a deadly crater in the Arctic; a looming natural disaster in California.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E20 and S03E04.

From sea to shining sea, the United States is home to some of the most perplexing mysteries on the planet; strange spots cover a vast stretch of desert near the Grand Canyon; a Los Angeles water reservoir unexpectedly turns black. This episode is a mashup of segments from S03E12, S03E08, S02E02, S03E01 and others.

Satellites orbit earth 17,000 miles an hour, capturing images of our world that are breathtaking, but some are bizarre. This unique perspective reveals objects that seem to make no sense & phenomena that defy explanation. Such images force the question, what on Earth is that? This episode is a mashup of S03E18 and S03E03.

Strange satellite images fuel new investigations into some mysteries of the ancient world; mysterious markings in the Peruvian desert; a secret structure buried near the ancient city of Petra; an abandoned fortress in an arid wasteland. This episode is a mashup of segments from S01E02, S02E02, S03E03, and others.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E19 and S03E06.

Satellite photos reveal new evidence to explain the Bible's darkest mysteries; the face of Jesus is spotted on a field in Hungary; ruins that could be the site of the lost city of Babylon. This episode is a mashup of S02E05, S01E02, S01E01, S01E04, S03E16, and S01E05.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E14 and S03E01.

New discoveries reveal the ancient Egypt's secret history; strange patterns suddenly appear near the pyramids; an ancient city seems to be moving; an apocalyptic sandstorm threatens to swallow the region. This episode is a mashup of S01E05, S01E04, S02E05, S03E07, S03E03, and S03E18.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E15 and S03E11.

Strange images fuel investigations into American conspiracies and controversies; something eerie is in the night sky over Texas; there might be a terrifying object at the bottom of a Minnesota lake; a human seems to fly above the California hills. This episode is a mashup of segments from S03E16, S03E03, S01E03, and others.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Discoveries by satellite help authorities pursue the world's most wanted criminals; investigators reveal El Chapo's escape; a legendary outlaw might have left his signature calling card; cutting-edge technology aids in the pursuit of Joseph Kony. This episode is a mashup of S02E03, S03E10, S03E07, S03E14, S03E11, and S03E03.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E09 and S03E10.

New satellite discoveries tell the stories behind the world's most mysterious lost cities; strange rings might be evidence of a fabled Biblical city or the mythical city of Atlantis; bizarre patterns point to a Californian ghost town. This episode is a mashup of segments from S02E06, S01E06 and others.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S03E16 and S03E12.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S02E05 and S03E05.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S01E04 and S03E07

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S01E06 and S03E17.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S02E06 and S03E08.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S01E02 and S02E01.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre images observed from space shed new light on Nazi mysteries.

An exploration of breathtaking images and unfathomable mysteries.

An exploration of breathtaking images and unfathomable mysteries.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E05 and S01E05.

An exploration of breathtaking images and unfathomable mysteries. This episode is a mashup of S04E06 and S03E12.

An exploration of breathtaking images and unfathomable mysteries. This episode is a mashup of S04E07 and S03E05.

An exploration of breathtaking images and unfathomable mysteries. This episode is a mashup of S04E08 and S02E01.

An exploration of breathtaking images and unfathomable mysteries. This episode is a mashup of S04E09 and S03E03.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E10 and S02E06.

An exploration of breathtaking images and unfathomable mysteries.

An exploration of breathtaking images and unfathomable mysteries. This episode is a mashup of S04E12 and S03E09.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E13 and S01E01.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E15, "Curse of Medusa", S02E05, "Curse of the Lost Kingdom", and S04E02, "Fountain of Youth Found?

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E17, "Hunting the Ark of the Covenant", S03E16, "Siberian Hell Pit", and S04E04, "Beasts of the Lost Jungle."

Bizarre markings are observed from space in oceans and deserts across the planet; strange sightings point to conspiracies that could have global repercussions. This episode is a mashup of S04E18, "Forbidden City of Inca Gold", S03E15, "Lost Empire of the Amazon", and S04E05, "Mystery of Fang Forest."

Bizarre markings are observed from space in oceans and deserts across the planet. Strange sightings point to conspiracies that could have global repercussions.

Bizarre markings are observed from space in oceans and deserts across the planet. Strange sightings point to conspiracies that could have global repercussions.

New discoveries uncover clues that could reveal the truth behind some of the Bible's greatest mysteries, and experts investigate if this evidence will lead them to the Ark of the Covenant, the Garden of Eden, and the lost city of Babylon.

New discoveries uncover clues that could reveal the truth behind some of the Bible's greatest mysteries, and experts investigate if this evidence will lead them to the Ark of the Covenant, the Garden of Eden, and the lost city of Babylon.