The Mighty Northwest - Episode Guide

Titans clash along California's big coast, where rugged highlands meet the deep ocean.

The tallest trees in the world tower over the California coast.

The snowy crests of the High Cascades conceal the most active volcanoes in the Lower 48.

Discovering the ice-carved valleys, steep slopes and hidden lakes of America's glacier lands.

The amazing life around the Rockies, from low valley meadows to the peaks of its mountains.