Beneath the hedges and fields of Cornwall lie chambers cut deep into the land. Narrow stone passages, entered on hands and knees, where the air is cool, the sound is strange, and the outside world seems to vanish. They are called fogous, and you will not find them anywhere else in Britain.

In this episode, Robin Vickery takes us underground. From Pendeen Vau on the high cliffs to Halliggye on the Lizard, Carn Euny with its domed side chamber, and the Piskey Hall of Trewardreva, we explore what these ancient places were, how they were built, and the folklore that still clings to them. Were they refuges, storehouses, or ritual spaces? Why do stories of piskies, spirits, and time slips gather in their shadows?

Blending archaeology with folklore, this journey is about more than facts and theories. It is about how the earth itself can hold memory. Step below the surface with us, and discover why these Cornish fogous remain some of the most evocative and mysterious places in Britain.