Crystal Cave (Wisconsin)
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Crystal Cave is a cave in Pierce County, Wisconsin, located about a mile west of Spring Valley. Discovered by accident in 1881 by William Vanasse, it is Wisconsin’s longest known cave.[1][2] Crystal Cave is a multi-level solutional cave formed in dolomite bedrock in the Prairie du Chien Group. The dolomite was formed approximately 485 million years ago in the lower Ordovician Period when a warm shallow ocean covered much of Wisconsin and Minnesota.[2][3]
Overview
The cave is accessed by a series of steps and ramps that allow visitors to descend over 70 feet. Stalactites, stalagmites and rippling flowstone can be seen hanging from the ceiling or covering the ledges of the cave.
During the school year, the cave is a popular destination for tourists and school field trips.
References
- ^ Judy Nugent (October 2007). "The world down under". Wisconsin Natural Resources magazine.
- ^ a b Jean Cunningham; Holly A. S. Dolliver; William S. Cordua (2011). "Flaming meteors, dark caves, and raging waters—Geological curiosities of western Wisconsin". Field Guides. 24: 411–424.
- ^ "Crystal Cave page". Geological Society of America Field Guide. 21 January 2006. Archived from the original on December 10, 2006.
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External links
44°49′57″N 92°15′07″W / 44.832567°N 92.251950°W
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