General Info

The World’s Largest Underground Business Complex.® What is SubTropolis? SubTropolis was created through the mining of a 270-million-year-old limestone deposit. In the mining process, limestone is removed by the room and pillar method, leaving 25-foot square pillars that are on 65-foot centers and 40 feet apart. • Over 6,500,000 square feet of leasable space • More than 7,500,000 square feet for expansion • 8.2 miles of lighted, wide, paved roads • 2.1 miles of railroad track • More than 500 truck dock locations • Served by over 300 truck lines • More than 55 international, national, regional and local companies • More than 2,000 employees • More than 1,600 parking spaces • Over 10,000 limestone pillars • Protected by fire sprinklers • Strength of limestone is 18,000-24,000 pounds per square inch (6x stronger than concrete) • Over 55,000,000 square feetThe World’s Largest Underground Business Complex.® What is SubTropolis? SubTropolis was created through the mining of a 270-million-year-old limestone deposit. In the mining process, limestone is removed by the room and pillar method, leaving 25-foot square pillars that are on 65-foot centers and 40 feet apart. • Over 6,500,000 square feet of leasable space • More than 7,500,000 square feet for expansion • 8.2 miles of lighted, wide, paved roads • 2.1 miles of railroad track • More than 500 truck dock locations • Served by over 300 truck lines • More than 55 international, national, regional and local companies • More than 2,000 employees • More than 1,600 parking spaces • Over 10,000 limestone pillars • Protected by fire sprinklers • Strength of limestone is 18,000-24,000 pounds per square inch (6x stronger than concrete) • Over 55,000,000 square feet