SubTropolis: An Abandoned Mine Transformed into a Thriving Underground City
2025-07-23
SubTropolis, an underground marvel covering an area equivalent to 42 Arrowhead Stadiums, has transformed an abandoned limestone mine into a bustling underground city. Featuring over 10 miles of paved roads and energy-efficient LED lighting, its limestone walls provide natural insulation, earning it a perfect ENERGY STAR® rating. Safety is paramount, with robust limestone pillars and 24/7 surveillance attracting government agencies and high-value tenants. Expansion plans are underway, adding another 8 million square feet of industrial space, showcasing its continued growth potential.