Image gallery: A look inside Iron Mountain's Room 48 and The Underground

Iron Mountain experiments with the geothermal environment

This gallery accompanies our story 22 stories down, inside Iron Mountain's experimental Room 48. Please click through for more information about Room 48 and The Underground.

The mine shafts in Iron Mountain's underground data center are supported with huge limestone columns. Most limestone mines excavate up to 85% of the mineral, but miners for U.S. Steel took away only 65% for added stability.

Limestone column supports

Return to 22 stories down, inside Iron Mountain's experimental Room 48

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