Glen Canyon National Recreation Area
Containing some of the most rugged and remote backcountry within the Colorado Plateau, Glen Canyon National Recreation Area (NRA) provides public recreation use of Lake Powell and adjacent lands and preservation of the scenic, scientific, and historic features of the area. Lake Powell is the second largest man-made lake in North America. Before it widens and becomes Lake Powell, the Colorado River flows for about 42 kilometers as a river in Glen Canyon. There is evidence of 10,000 years of human occupation at Glen Canyon, and an intensive survey of only a fraction of the area has led to the discovery of more than 2,300 archeological resources. In addition to Native American archeological sites, the area includes historic structures, trails, and cultural landscapes of Spanish and American explorers and early pioneers. Among the many wildlife species present at Glen Canyon is the desert bighorn sheep.