Untouched cave to provide clues to Black Hills history – Porterville Recorder


Memphis Commercial Appeal
Untouched cave to provide clues to Black Hills history
Porterville Recorder
SIOUX FALLS, S.D. (AP) — The National Park Service is beginning to excavate the mouth of an unexplored cave in the Black Hills of South Dakota, and researchers believe it could help broaden our understanding of how the region's climate has changed …
Untouched cave in South Dakota to provide clues to history – Fox NewsVocal Republic



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