This National Park Service (NPS) website highlights the natural resources of Arches National Park, in addition to the sandstone arches for which the park is famous. Details about the park include the animals that inhabit the area (amphibians, birds, mammals and reptiles), natural features (deserts, geologic formations, pools, potholes and soils), environmental factors facing the park (invasive species, perigrine falcons, bighorn sheep), and plants (cacti, grasses, lichens, mosses, liverworts, trees, shrubs and wildflowers).