Check out this awesomeness from the Clapham North Deep Shelter. Built to house 12,000 people during the air raids of World War II, these rare photos offer a unique look into the forgotten structures. Urban Explorer UK has a stunning set of photos taken inside the shelter including a couple with models which bring these pieces of history bang up-to-date. Their size is mind boggling when you think they’re lying there beneath Clapham High Street. Kudos to Urban Explorer for securing access when they aren’t open to the public.