The nearest town is Overton, Nev. There is no lodging inside the park, only two campsites near the park’s west entrance, easily reached by a marked turnoff from Interstate 15. Arch Rock Campground is the smaller and more primitive of these, but, on the other hand, is more scenic. It includes such notable rock formations as Arch, Piano and Poodle rocks. (Dan Blackburn / For The Times)