While in the area, we spent a couple of hours in Hot Springs at the Mammoth Site. Discovered in the 1970s during a construction project, the site preserves the fossil remains of Columbian and woolly mammoths, as well as camels, wolves and giant bears. The animals became trapped in a sinkhold some 26,000 years ago during the last Ice Age. The indoor excavation features the remains of some 58 mammoths, and describes how the bones are being preserved and studied.
Here are several photos from the actual excavation, as well as full-size mammoth replicas and a replica of a bone shelter made from their remains.