Margaret Henriette "Margo" Hillman
May 5, 1969~Sept. 24, 1983
14 yrs. old
Margaret Henriette "Margo" Hillman, 14, disappeared from an old-fashioned, cowboy-style party in a large barn at the 5,000-acre Heil Valley ranch north of Lefthand Canyon. U.S. Forest Service workers were doing a timber survey in the foothills north of Boulder, CO. In a ravine in Geer Canyon, they found the partially buried remains of a skeleton. It’s likely that when the body of a woman or girl was originally buried, it was completely underground.