Caprock Canyons State Park, in southeastern Briscoe, Floyd, and Hall Counties three miles north of Quitaque, was acquired from the estate of Theodore Geisler in May 1975. It comprises 13,960.6 acres and is the third largest park in the Texas state park system; its terrain is the roughest. In addition to Lake Theo (named after Geisler), the park features spectacular landscapes carved by erosion at the edge of the Caprock, colorful cliffs and canyons, and abundant wildlife, including mule and white-tailed deer and imported North African aoudad sheep (see EXOTICS and GAME ANIMALS). One of the park's most interesting features is the Folsom site near Lake Theo, one of five such sites in the nation. Among the artifacts first excavated there in 1974 were several Folsom points and remains of an extinct Ice Age bison. This bison-kill site gives substantial evidence that Folsom man manufactured and made use of his weapons here about 10,000 years ago. Springs in Holmes Canyon probably contributed to making this area a favorite campsite for pre-Columbian man. Activities available at the park include camping, hiking, horseback riding, fishing, picnicking, swimming, mountain bike riding, rock climbing and sightseeing.