Nine miles past Peach Springs, a plaster dinosaur welcomes you to the Grand Canyon Caverns & Inn, a cool subterranean retreat from the summer heat. An elevator drops 210ft underground to artificially lit limestone caverns and the skeletal remains of a prehistoric ground sloth. If you’ve seen other caverns, these might be underwhelming, but kids still seem to get a kick out of a visit. The complex also includes a campground (tent/RV sites $15/30) amid junipers and a basic motel (r $85). The restaurant (mains $5 to $15; open 7am to 7pm) is a nice little roadside spot with a small playground and serves burgers and fried food. Note that, despite the name, Grand Canyon Caverns has nothing to do with the Grand Canyon itself.