Description - The magnetism of names like "Sundance" and "Devils Tower" draw the traveler to this spacious park. The area was reserved by treaty for the Sioux tribes until the great Black Hills gold rush in 1874. Conflicts with Native Americans grew during this time, and the Sioux lost control of the lands. Keyhole State Park was named for the "Keyhole" livestock brand that was used by two brothers by the name of McKean.
Keyhole State Park, located on the western edge of the famed Black Hills, features nine campsites, reservoir, marina and hotel. The Keyhole area centers on the reservoir, approximately 14,720 acres of water recreation opportunity.
- Keyhole Reservoir is the main attraction at Keyhole State Park, offering excellent fishing for waslleye, catfish, small mouth bass and nothern pike. Keyhole is also a mecca for both resident and migrating birds of all species. Visitors have the opportunity to view many type of wildlife including mule deer, white tailed deer and wild turkeys. A marina and motel are located on Headquarters Road, adjacent to the lakeshore.
Recreation - Recreational activities in the park include swimming, sunbathing, hiking our volksmarch trail, boating, water-skiing, birdwatching and fishing.
Climate - The elevation at Keyhole is about 4,100 feet. The four seasons are comparatively mild with glorious weather from spring through fall and some of the finest snowmobiling in the state during the winter months.
Keyhole State Park, located on the western edge of the famed Black Hills, between Sundance and Moorcroft, is easily accessed off I-90 at exit 165. Another option is to take exits 153 or 564 in Moorcroft. Take Hwy 14 north six miles to Hwy 113. Within sight of Devils Tower, Keyhole State Park is situated along the southeast shore of Keyhole Reservoir.