Iolos Snowdonia - Episode Guide

Iolo Williams explores Snowdonia. He starts his journey during spring in Nant Ffrancon in the Ogwen Valley and discovers a relic of a past landscape in Bird Rock.

In summer, Iolo encounters buzzards nesting and dragonflies and night-flying moths being hunted by migrant nightjars from Africa.

In autumn, Iolo visits hidden wildernesses with outstanding views of the season's colours and the big mountains of Snowdonia.

It is winter and Iolo endures life-threatening wind chill, ice and snow on the Carneddau high peaks.