Arizona Rocks! tells the stories of 44 of the best geologic sites in the state. Not only will you learn about well-known places, such as Barringer Meteorite Crater and Petrified Forest National Park, but you'll also discover lesser-known sites, including Hopi Buttes, which formed from steam-driven explosions; Peridot Mesa, where gemstones from the Earth's interior are found, and Montezuma Well, a limestone sinkhole with a perennial supply of water.