Discover The Mammoth Site in Hot Springs, South Dakota. The Mammoth Site boasts the largest concentration of mammoths in the world. You can tour this indoor active dig site and view Ice Age fossils. The Mammoth Site offers guide tours, enhanced educational experience with a gaming app and Summer Educational Programs. The Mammoth Site is open year round Learn more.

News & Blog

The Mammoth Site of Hot Springs, SD Inc. will be having a Fossil Fright Night on October 25, 2018 from 6:00 pm until 9:00 pm. Guests will experience The Mammoth Site in a new way. Flashlight Bonebed Tours, Scary Stations in the Bonebed, the Ice Age Exhibit Hall will feature candy and learning stations with a miniature golf station in the Sharon McLain Classroom.
Admission will be three cans of non-perishable food items per person or $3.52 per person. The food collected that evening will be donated to the local Hot Springs Food Pantry. Money raised will go towards public education at the Site.
Halloween costumes are encouraged. This event will provide a safe, fun and learning environment for children and people of all ages.
This is a great way to spend a night with friends and family so make plans to attend The Mammoth Site Fossil Fright Night, Thursday, October 25, 2018. For more information on this exciting new event call 605-745-6017.

The Mammoth Site Receives $10,000.00 in Grant Award

The Mammoth Site of Hot Springs, SD Inc. would like to give a “Mammoth” Thank You to the BNSF Railway Foundation for the recent grant award of $10,000.00. The grant will be used to help update and create new exhibits at The Mammoth Site.
According to Presston Gabel, Mammoth Site Business Manager, “Through the continued support of the BNSF Railway Foundation and other like-minded Foundations, The Mammoth Site has been able to continue to grow and stay at the forefront of Science Education and Research as it relates to The Mammoth Site and the Black Hills as a whole during the last Ice Age.”
For more information please contact Bethany Cook at or at 605-745-6017.
“In accordance with Federal law and U.S. Department of Agriculture policy, this institution is prohibited from discriminating on the basis of race, color, national origin, age, disability, religion, sex, familial status, sexual orientation, and reprisal.” (Not all prohibited bases apply to all programs).

The Mammoth Site received a surprise last month when the new analysis for the new age of the Sinkhole was confirmed as being at least 140,000 years old. The Mammoth Site dates back to the Pleistocene (Ice Age) and so far all of the geochemical dating (such as radiocarbon dating) has indicated that the sinkhole was full of warm water and struggling mammoths about 26,000 years ago. Dr. Jim Mead, Chief Scientist of The Mammoth Site Science Team wanted to take a closer look at assessing the age and finding a more precise date – they wanted to try new technique.
Dr. Steve Holen, a Mammoth Site Science Associate and Board Member has been collaborating with a colleague Dr. Shannon A. Mahan of the US Geological Survey in Denver for a number of years. They have been using OSL (Optically Stimulated Luminescence) dating on some of Holen’s mammoth sites in Nebraska and around the region. So, on January 8, 2016, a group assembled at The Mammoth Site and took a number of samples of sediments to analyze for OSL dating.