Pinners Stone Mine
Pinners stone mine in Lancashire began operating in 1841, the site consists of a maze of underground pillar and stall style tunnels with some evidence of above ground quarrying too. The site was mined for stone known as lower haslingden flag with the end products being building stone, flags, setts and engine beds. Work at the quarry continued until 1923 when operations were disbanded and the quarry abandoned. In recent years the quarry has been frequented by children from the local area some of who even camped out overnight in the tunnels of the mine leading to some entrances being permanently sealed with just a couple fitted with enormous gates and locks to stop anyone entering while still allowing access for qualified personnel. Today the site is hugely overgrown, the mines themselves are in quite a reasonable condition but no one should enter without the appropriate training or equipment. The mine still has a crane in its original position, there is a photo of it but it was on a much earlier trip and isn't of a brilliant quality.
Update
I Revisited this mine recently to get some better photos of the crane, the mine is in a similar condition as last time with no recent rockfalls.