Nottingham’s City of Caves attraction shows what remains of the Drury Hill cave-system, named after a street that was swept away to make room for the Broadmarsh shopping centre which opened in 1972.
The complex includes the only underground tanneries in Britain, if not the world, dated, by pottery found in the cess-pit, to 1270-1300, and known to have been used as late as 1639. The tanning process was so obnoxious, involving soaking hides from the slaughterhouses in vats of urine and ordure, that the caves were rat-free and the tanners, who had little else to be cheerful about, were notably immune to the plague.
Further tanneries at the Black’s Head, Drury Hill, behind 14 Low Pavement, were filled in for safety in 1992
The City of Caves website is at http://www.cityofcaves.com. It’s a good idea to switch your computer to mute.