cliffe fort, kent

flooded interior of the 1860s fort, corridor in the south block which housed 300 officers and men. you'd need waders not wellies in here, as it's about 3 foot deep in places. also a torch 'cos there's lots of shell hoist holes and collapses floors to watch for. someone is supposed to have died exploring this in the '80s, and it's not got any safer.