Over four seasons, Iolo Williams goes to his favourite locations in Snowdonia to look for stunning wildlife and meets people who help him discover the national park's true nature. In this final episode, it's winter and Iolo endures life-threatening wind chill, ice and snow on the Carneddau high peaks. A cold snap takes him to one of his old roaming grounds on the Berwyn moors, where he finds a solitary robin surviving in thick snow. Opposite Portmeirion, the stunning Dwyryd estuary is teeming with winter birds feeding. Crossbills busily eat cone seeds in a forest near Betws-y-Coed. Iolo also heads to Ceunant Llennyrch, a wonderful gorge hidden by an ancient woodland that's existed since trees first colonised Snowdonia after the last ice age. On the foothills of Cadair Idris, he learns that old folk had names for every piece of land. Show less