Garden of Gods, Lanai Island, Hawaii, 1997Photograph by Jim RichardsonThousands of years of erosion left this lunar-like landscape of boulders strewn across a canyon on Hawaii's Lanai Island, known as the Garden of the Gods. According to island legend, gods tending their earthly garden dropped the rocks from the sky. Visitors to the area have constructed rock cairns, a tradition many islanders disapprove of.