The Underground World of Richard Sauder:
http://www.etfriends.com/conference/addinfo/sauder.html ,
http://ufosworld.blogspot.com/2007/12/secret-american-military-space-program_07.html ,
http://planetoddity.com/abandoned-top-secret-soviet-underground-submarine-base ,
http://englishrussia.com/index.php/2009/04/14/worlds-biggest-submarine ,
http://planetoddity.com/abandoned-salt-mine-in-romania ,
http://en.wikipedia.org/wiki/Svalbard_Global_Seed_Vault ,
http://en.wikipedia.org/wiki/Frozen_Seed
RS has done a lot of impressive research.
http://desertshapes.blogspot.com/2010/03/richard-sauder.html