BusinessweekWelcome to SubTropolis: The Massive Business Complex Buried Under Kansas CityMore than 1,000 people spend their workdays in SubTropolis, an industrial park housed in an excavated mine the size of 140 football fieldsFacebookTwitterLinkedInEmailLinkGiftFacebookTwitterLinkedInEmailLinkGiftBy Patrick ClarkFebruary 4, 2015 at 11:19 AM ESTBookmarkSave