Tags: Cave.
SubTropolis is a 55000000 square foot (5060000 m³) 1100-acre (4.5 km2) manmade cave in the bluffs above the Missouri River in Kansas City Missouri United States that is claimed to be the world’s largest underground storage facility.Developed by late Kansas City Chiefs owner Lamar Hunt via Hunt Midwest Real Estate Development Inc. it has trademarked the phrase World’s Largest Underground Business Complex.Dug into the Bethany Falls limestone mine SubTropolis is at places 160 feet (49 m) beneath the surface.
