General Location: SW1/4 SE1/4 NW1/4 Section 16, T88N R3E
Crystal Lake Cave is a commercial cave located 3 miles south of Dubuque, Iowa on U. S. Highway. 52.
Phone: 319-556-6451
Open: 9-6 daily, Memorial Day-Labor Day; reduced hours May, Sep.-Oct
Crystal Lake Cave is also know as Marcus Cave and Rice Cave.
The following pictures or from post cards circa 1930's.
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Map of Crystal Lake Cave from a survey of the cave by members of the Iowa Grotto circa 1959 and redrawn by J. Dockal 1975.
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This page has been created and is maintained by James A. Dockal
Jim Dockal --