The only caving organization in the Dakotas, the Paha Sapa Grotto (PSG) has been working to explore and protect caves in the Black Hills since the 1960s. PSG members have discovered and cataloged more than 400 local caves, and are a great resource for education, rescue expertise, and general caving knowledge. The Grotto is the greatest friend of the BHCNC, and should be your first stop if you’re thinking about visiting wild caves.