Badlands National Park has revealed the past to park service archeologists. Very little is known about the region. National Park Service archeologists have used discoveries such as bison bone and other artifacts to reveal more information. Over 300 sites have been discovered with the oldest dating to more than 12,000 years ago. For more information about archeology in Badlands National Park, check out this report. For more information about Badlands National Park, check out its website.