150 miles of corridors honeycomb the ground 650 feet deep beneath Hutchinson, KS. We take a tour of this amazing - and apparently very safe - place. Four different companies operate down here. Three make salt. One is a company called Underground Vaults. It's a document storage facility. Companies and governments ship important documents and artifacts that must be preserved from all over the world. A copy of almost every film that was ever produced is stored down here as well.
The Strataca Underground Salt Museum
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