In the second episode of Kate Humble: Off the Beaten Track, Kate and her Welsh sheepdog, Teg, travel from southern Snowdonia to one of the least-populated areas in the UK, deep in the Cambrian Mountains. Along the way, Kate experiences a deer cull, loses a herd of cattle on Cadair Idris mountain, meets a family relying on the weather to run their mod cons, tastes the Dyfi Valley from a glass and discovers the Welsh equivalent of the Amazon rainforest.