Arches National Park preserves over 2,000 natural sandstone arches, like the world-famous Delicate Arch, as well as many other unusual rock formations. In some areas, the forces of nature have exposed millions of years of geologic history. The extraordinary features of the park create a landscape of contrasting colors, landforms and textures that is unlike any other in the world.
Hunter-gatherers migrated into the area about 10,000 years ago at the end of the Ice Age. As they explored Courthouse Wash and other areas in what is now Arches, they found pockets of chert and chalcedony, microcrystalline quartz perfect for making stone tools. Chipping or knapping these rocks into dart points, knives, and scrapers, they created debris piles that are still visible to the trained eye.
Then, roughly two thousand years ago, the nomadic hunters and gatherers began cultivating certain plants and settled into the Four Corners region. These early agriculturalists, known as the ancestral Puebloan and Fremont people, raised domesticated maize, beans, and squash, and lived in villages like those preserved at Mesa Verde National Park.
While no dwellings have been found in Arches, the northern edge of ancestral Puebloan territory, there are rock inscription panels. Like earlier people, the ancestral Puebloans left lithic scatters, often overlooking waterholes where someone may have shaped tools while watching for game. People living in modern-day pueblos like Acoma, Cochiti, Santa Clara, Taos, and the Hopi Mesas are descendants of the ancestral Puebloans.