SubTropolis

Uncommon card · No. 160084

SubTropolis is a business complex located inside of a 14,000,000-square-foot (1,300,000 m2) limestone mine in the bluffs north of the Missouri River in Kansas City, Missouri. It was developed by late Kansas City Chiefs owner Lamar Hunt via Hunt Midwest Real Estate Development, Inc., with the trademarked phrase World's Largest Underground Business Complex. SubTropolis is up to 160 feet (49 m) beneath the surface, dug into the Bethany Falls limestone mine. It has a grid of 16-foot-high (4.9 m), 40-foot-wide (12 m) tunnels separated by 25-foot-square (7.6 m) limestone pillars created by the room and pillar method of hard rock mining. The complex contains almost 10.5 miles (16.9 km) of illuminated, paved roads and several miles of railroad track. The mine naturally maintains year-round temperatures between 65 and 70 °F (18 and 21 °C). The United States Postal Service and the U.S. Environmental Protection Agency lease spaces within SubTropolis, the U.S. Postal Service for its collectible stamp...

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