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Wonderland Cave

114 Reviews
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12634 Alpine Road
Nemo, SD 57719
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The cave was discovered in 1929 by two loggers and the first commercial tours started in 1930. Over the years, extensive exploration and development has opened more than two dozen rooms that are featured in the cave. Formations include stalactites, stalagmites, dogtooth spar, popcorn crystals, boxwork crystals and flowstone. Located south of Deadwood, Wonderland Cave is open May through October and offers tours seven days a week (8 a.m.-7 p.m., May-August; 9 a.m.-5 p.m., September-October).

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