洞穴
珠宝洞国家纪念碑
58位当地人推荐
来自当地人的小建议
Linda
April 2, 2021
Make reservations on the summer online. Has crystals,  and most cave formations, including large caverns. Is one of the longest caves in the world.
Marjorie
January 8, 2015
This is the third longest cave in the world and is administered by the National Park Service. I'd highly recommend the scenic tour which is moderately strenuous and lasts about 1 hour 20 minutes.
Amber
September 14, 2022
Third longest cave in the world.
Teesha
September 7, 2021
Jewel Cave National Monument is not only the third-longest cave in the world (currently 141.37 miles!), it is also one of its most structurally complex. Located just over an hour southwest of Rapid City, Jewel Cave is a regional gem tucked in the Black Hills.
Hugh & Sandy
October 24, 2017
3rd largest crystal cave in the USA, over 300 miles currently explored!
当地人还推荐的好去处
地点
11149 US-16
Custer, SD