Devils Tower, Wyoming © iStockphoto.com/Mike Norton
Devil's Marbles, Australia © L. Clarke/CORBIS
Monument Valley, Arizona © John McAnulty/CORBIS
Garrapata Beach on the Big Sur, California © David Muench/Corbi
Nambung National Park, Australia © Robert Essel NYC/CORBIS
Glen Canyon, Utah © Momatiuk - Eastcott/Corbis
Wave Rock, Australia © Chris Mellor/Lonely Planet Images
Slot Canyon, Arizona © imagebroker / Alamy
Zion Park, Utah © James Randklev/Getty Image
Perce Rock, Canada © Daryl Benson/Getty Images
Hopewell Rocks, New Brunswick © Darwin Wiggett/Getty Images
Mono Lake, California © Getty Images
Horseshoe Bend, Arizona © Travel Ink/Getty Images
Grand Staircase Escalante, Utah © Diane Cook and Len Jenshel/Getty Images
Giant's Causeway, Northern Ireland © Paul Wakefield/Getty Images
Etretat, Seine-Maritime, Normandy, France © David C Tomlinson/Getty Images
Bryce Canyon, Utah © ML Sinibaldi/CORBIS
Bisti Badlands, New Mexico © Jack Dykinga/Getty Images
Atacama Desert, Chile © Steve Allen/Getty Images
Arches National Park, Utah
Devil's Marbles, Australia © L. Clarke/CORBIS
Monument Valley, Arizona © John McAnulty/CORBIS
Garrapata Beach on the Big Sur, California © David Muench/Corbi
Nambung National Park, Australia © Robert Essel NYC/CORBIS
Glen Canyon, Utah © Momatiuk - Eastcott/Corbis
Wave Rock, Australia © Chris Mellor/Lonely Planet Images
Slot Canyon, Arizona © imagebroker / Alamy
Zion Park, Utah © James Randklev/Getty Image 
Perce Rock, Canada © Daryl Benson/Getty Images
Hopewell Rocks, New Brunswick © Darwin Wiggett/Getty Images 
Mono Lake, California © Getty Images
Horseshoe Bend, Arizona © Travel Ink/Getty Images 
Grand Staircase Escalante, Utah © Diane Cook and Len Jenshel/Getty Images 
Giant's Causeway, Northern Ireland © Paul Wakefield/Getty Images
Etretat, Seine-Maritime, Normandy, France © David C Tomlinson/Getty Images
Bryce Canyon, Utah © ML Sinibaldi/CORBIS 
Bisti Badlands, New Mexico © Jack Dykinga/Getty Images
Atacama Desert, Chile © Steve Allen/Getty Images
Arches National Park, Utah 
