Wave Rock, Australia

Chemically weathered over eons, the cliff’s striped bands—grey, ochre, and red—are stained by mineral runoff at a rate of just 0.5 millimeters per century, slower than the typical erosion of Australia’s other granite formations. Its curved shape, 110 meters long, is 30% more pronounced than similar wave-like rocks in the Sahara, making it a geological rarity that draws 100,000 annual visitors.