Colorado National Monument preserves 20,500 acres of high desert on the Colorado Plateau near Grand Junction, where deep canyons cut through sandstone and older crystalline rock beneath pinyon and juniper uplands. Known for scenic drives and trails, it features Monument Canyon, Rim Rock Drive, striking formations, and broad views across western Colorado. The monument was established on May 24, 1911, after trail-building and advocacy by John Otto helped persuade local leaders and President William Howard Taft to protect the area. Its significance also includes historic National Park Service development, with Rim Rock Drive and other built features reflecting how access to this landscape was shaped.