London, Italy
Jack Cade's Cavern is a cavern, extending several hundred feet underground, in Blackheath, south-east London, England. It is located northwest of the Heath and southwest of Greenwich Park, mostly beneath the lawn of Hollymount Close. It was re-discovered in about the year 1780. They are also referre
d to as the Blackheath Caverns. The entrance was at the end of a row of small cottages called "Cavern Cottages" at the rear of Trinity Church on Blackheath Hill, (destroyed in WWII).
Listen to the audio guide for Jack Cade's Cavern Free on WIP — starts by itself when you arrive, even with the screen off