Cave of the Mounds
National Natural Landmark · Blue Mounds, Wisconsin
A limestone cave in the Driftless Area near Blue Mounds, opened accidentally on 4 August 1939 when a quarry blast took the roof off a chamber nobody knew was there. Quarrying stopped permanently that day and the cave opened to the public the following May. It is not large — roughly 1,692 feet of passage, Wisconsin's fifth-longest cave — but it is unusually richly decorated, with stalactites, flowstone and helictites in a compact space, and the Department of the Interior designated it a National Natural Landmark in 1987.
2975 Cave of the Mounds Road, Blue Mounds, Wisconsin, 53517, United States
Open seven days a week year-round, generally 9:00 to 17:00 with a longer summer schedule, with guided tours beginning at 10:00 and running continuously. LAST TOUR ADMISSION IS ONE HOUR BEFORE CLOSING. Closed Thanksgiving, Christmas Eve and Christmas Day. The cave is a constant 50F in every season.
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