Time and weather have sculpted a likeness of George Washington in Colorado’s Roxborough State Park. It even has “teeth.”

Right: A profile discovered near South Bethlehem, Pa., during the clearing of a mountainside in 1913. “Viewed in profile, the nose, upper lip, eye, and chin are as clearly defined as though cut by human agency,” wrote one observer. “Even the rock formation of the head has a surface curiously like in appearance to the wigs of colonial days.”