This category features sites of caves open to the touring public and includes privately-owned commercial caves and those operated by federal, county, regional and local agencies.
Crystal Lake Cave
Discovered by a group of lead miners in 1868 and commercialized in 1932. Features half hour to 45-minute tour, hours, photo gallery and contacts. Located south of Dubuque.
[Speleology_Mozilla]
Last update:
January 2, 2007 at 17:41:54 UTC
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