I just ran across an old thread few may have seen. The ultimate BOIP ("Bug Out In Place"):
Part of the plausibility conundrum inherent in describing Kenley's masterpiece is the sheer scale of the project. When most people think of a bomb shelter, they envision grainy black and white U.S. government videos of nonplussed nuclear families scurrying into a basement room the size of Amelda Marcos' walk-in shoe closet. Kenley's 2,000 square foot, four storey subterranean hangout is replete with concrete walls and floors that are one metre thick, secret passages, 13 ventilation systems, an "electromagnetic, pulse wave protected" computer room, 1,000 gallon water tank, radiation proof paint, spacious living and storage areas and two "secret" rooms—simply too big to fit the construct of the average Jane and Joe's mind without a little visual help.