geology
4 articles on geology.
-
Sitting Bull Crystal Caverns
Sitting Bull Crystal Caverns near Rapid City was one of the Black Hills' early commercial show caves, opened to the public in the 1930s tourist era.
-
Wind Cave: The World's First Cave National Park
Wind Cave in the southern Black Hills near Rapid City became the first cave national park in 1903, known for rare boxwork and Lakota emergence stories.
-
Jewel Cave: One of the Longest Caves on Earth
Jewel Cave, west of Custer in the Black Hills near Rapid City, is one of the longest known caves on Earth, its mapped passages still growing each year.
-
The Mammoth Site of Hot Springs
The Mammoth Site at Hot Springs, south of Rapid City in the Black Hills, is an ancient sinkhole that trapped dozens of mammoths and remains an active excavation.