My husband and I were in Keystone early this week visiting Mt Rushmore and Custer State Park. One evening we took a short walk away from the main strip to the original old part of Keystone. We stumbled upon Earth Treasure which is a rock shop/antique store combination. The first thing we noticed was the front fence it is created with old tools, bike gears,etc all welded together. Karen the owner, was so friendly and helpful. I wanted 2 particular types of polished stones and Karen took the extra time to find what I requested. She said she has had shops in the area since the 1970's. We are glad we took the time to explore the original historic Keystone. read more