11149 U.S. Highway 16
Custer, SD 57730
+1 605 673 2288
Known as the third-longest cave in the world, Jewel Cave has more than 122 miles of passages lined with glittering calcite crystals. Visitors can choose from three tours: the Scenic Tour
($8 per person) is a moderately strenuous, one-hour trek on a paved and lighted trail; the Historic Tour
($8) is a two-hour, strenuous trip through the cave lit only by candle lanterns; and, the Spelunking Tour
is an extremely strenuous, four-hour exploration of an undeveloped portion of the cave. Check website for varying open hours.