The caves were used as a munitions depot during World War I.
At the height of the Blitz in 1940, the tunnels sheltered up to 15,000 people nightly.
The network contains a 'chapel' carved into the rock that served as a place of worship for shelter residents.
Famous musicians including David Bowie, Jimi Hendrix, and The Rolling Stones performed in the caves during the 1960s and 70s.
The caves have been used as a filming location for episodes of the television series Doctor Who.
The tunnels were originally excavated for chalk and flint, which were used extensively in local London building construction.
There are no natural geological features; the entire 22-mile expanse was created by human hands.
The caves maintain a consistent, cool temperature throughout all four seasons.
Before being used as a shelter, the caves were utilized as a mushroom farm during the late 19th century.
Chislehurst Caves are a 22-mile network of man-made chalk and flint mines located in southeast London. The tunnels were excavated over several centuries for mining and later repurposed for diverse uses including air-raid shelters during World War II. The site maintains a constant underground temperature of 10 degrees Celsius year-round. Visitors access the site exclusively through guided tours, which cover a portion of the extensive subterranean layout. The complex features historical remnants of the wartime shelters, including remnants of sleeping bunks and underground medical facilities. The site has functioned as a venue for rock concerts and television filming due to its unique acoustics and setting. Access is restricted to guided groups to manage safety within the dark, unlit tunnels. The caves are situated within a woodland area, transitioning from industrial mine to historic monument.
The main cavern entrance and the historic underground chapel area provide the most distinctive lighting and atmosphere for photography.
Wear sturdy, comfortable footwear as the ground is uneven and can be damp.
Bring an extra layer of clothing regardless of the outside temperature, as it remains chilly inside.
Pre-booking is essential as capacity is limited and tours fill up quickly.
Attempting to explore the tunnels independently is strictly prohibited and dangerous.
Closed on Mondays and Tuesdays; typically restricted to weekends and school holidays during certain parts of the year.
Visitors must stay with the guided group at all times for safety reasons and remain quiet to ensure the guide can be heard.
