FRUITA — In Edward Abbey’s classic, “Desert Solitaire,” the onetime seasonal ranger complained about the road construction and modernization taking place in Utah’s Arches National Park. “You can’t see anything from a car,” he railed. “You’ve got to get out of the (goshdarn) contraption and walk — better yet, crawl — on hands and knees, over the sandstone and through the thornbush and cactus.” Exiting the car and stomping through the desert is exactly what’s required to view Colorado’s outstanding collection of sandstone arches. Colorado’s spans, the second-highest concentration in the country, grace Rattlesnake Canyon in the McInnis Canyons National Conservation Area southwest of Fruita.