A visit to the potholes of the Pennines.
Titles read: "POT-HOLING [sic] IN THE PENNINES!"
Pennines, Yorkshire and Derbyshire.
Various shots of a man climbing down a stepladder into the potholes of the Pennines. We follow him down and see various rather dark scenes down there. A small waterfall is seen amongst the rocks, as well as stalactites and stalagmites.