USA, South Dakota, Keystone trip planner. Plan your travel route on map, share with your friends and family & find great vacation deals to Keystone with Voyajo
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Keystone is a town in the Black Hills region of Pennington County, South Dakota, United States. The population was 337 at the 2010 census. It had its origins in 1883 as a mining town, and has since transformed itself into a resort town, serving the needs of the millions of visitors to Mount Rushmore (...) (from Wikipedia).
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