Keystone (pop. 300) was established shortly after gold was discovered. The Holy Terror Gold Mine was discovered in 1894 was a very lucrative mine, named for the owner's wife. The town is home to Mount Rushmore, and two bridges that lead to the top of Iron Mountain - offering scenic views.
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| Maps | Use our detailed maps to plan your sightseeing routes while visiting Keystone, South Dakota.
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| Top Rated Tourist Attractions | A detailed list of popular top rated tourist attractions to visit while in Mount Rushmore National Monument, South Dakota.
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