Grand Canyon Caverns

Grand Canyon Caverns, a show cave near Peach Springs on the Coconino Plateau, is one of the largest dry caverns in the United States, lying 210 feet underground. Its unusual dryness leaves stalagmites and stalactites scarce. Discovered by Walter Peck in 1927, the caverns became a roadside attraction, though an early display falsely labeled human remains as a caveman; in the 1960s they were identified as two Hualapai brothers who died in the winter of 1917–1918 and were buried there after a snowstorm. The site later gained a new entrance, became a Cold War fallout shelter for 2,000 people, and still combines natural wonder with local history and Route 66 tourism.

Arizona · United States