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.
Crystal Lake Cave
Crystal Lake Cave - Nature's Masterpiece of Underground Panorama-Dubuque,Iowa
2024-07-04
Recreation, Outdoors, Speleology, Show Caves - Crystal Lake Cave. Discovered by a group of lead miners in 1868 and commercialized in 1932.