Paleoindians and early Native Americans were the first to utilize Rollins Pass as a natural, low crossing over the Continental Divide for the purposes of communal hunting of large game, including bighorn sheep and elk. There are more than 96 documented game drives, including the Olson game drive, found largely above timberline and near the summits of multiple mountain ridges. Handmade rock walls drove prey toward hunters waiting in blinds. These unique high-altitude constructs were built, refined, and continually used over millennia. Currently the game drives are being studied by Colorado State University archaeology graduate and PhD students led by Jason M. LaBelle, PhD, the associate professor in the Department of Anthropology at the Center for Mountain and Plains Archaeology in Fort Collins, Colorado. The game drives built on—and over—Rollins Pass have international significance.