PXL 20240927 101447569-001-Chislehurst Caves This Way

The "caves" are a network of 22 miles of human-dug tunnels and caverns, some created as early as the 13th century. Initially for mining chalk and flint, they were used in the 20th century as munitions storage in WW1, a mushroom farm, extensive bomb shelters in WW2 housing 15,000 people, a music venue and for tv and film location shooting.