This is the first of the two deep shelters that were built at South Foreland. It was probably used by the people who manned the nearby plotting rooms as well as gun crews and operations staff. This deep shelter has three entrances, which have been sealed since the mid-eighties.

Inside, the shelter is in very poor condition. The plywood has rotted away from the walls, and the tarred paper that was used to line the ceiling has become totally covered in a white mould, which also covers some of the stairs and walls in places.