Robert Macfarlane describes his travels in various worlds beneath our feet.

This time the adventure is urban. He travels towards a city's catacombs:

"Late in the morning we drop down a set of staircases to a point named on the maps as Hell Well."

Read by the author.

Abridged by Katrin Williams.

Producer: Duncan Minshull

First broadcast on BBC Radio 4 in April 2019. Show less