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Explore Keystone Business, Communities South and more!

The Keystone business area was battered after the flood that swept through a number of communities south of Rapid City.

Tom McKiernans works to clean a Keystone home after the flood that swept through Keystone, Rapid City and the surrounding area. At least 11 people in the Keystone area died in the flood.

Postcard of duck-billed dinosaur at the South Dakota School of Mines and Technology in Rapid City, SD. 1950s