450-1830 - Detail of red cliff, Dzhety-Oguz, near Kara-Kol, Kyrgyzstan, Central Asia, Asia

641-5371 - Grand Canyon, from helicopter, UNESCO World Heritage Site, Arizona, United States of America, North America

83-12018 - Tessellated Pavement, a wave-cut platform of horizontal strata, north of Pirates Bay, Forestier Peninsula, South East, Tasmania, Australia, Pacific

83-12020 - Tessellated Pavement, a wave-cut platform of horizontal strata, north of Pirates Bay, Forestier Peninsula, South East, Tasmania, Australia, Pacific

83-11932 - Looking from Dead Horse Point near Canyonlands National Park over the Colorado River canyon to the evaporation ponds at Potash. Mined salts are concentrated here for the extraction of potash for fertilizer, Dead Horse Point State Park, Utah, USA

83-11924 - The eroded sandstone landscape of Monument Valley Tribal Park, a Navajo Nation reservation on the border with Utah, its scenery immortalised in many Western films, Monument Valley, Arizona, United States of America (USA), North America

83-11922 - The eroded sandstone mesas and buttes of Monument Valley Tribal Park, a Navajo Nation reservation on the border with Utah, its scenery immortalised in many Western films, Monument Valley, Arizona, United States of America (USA), North America

83-11957 - The 6904ft 'Beehives' in the western walls of the south end of Zion Canyon, in the most accessible part of this stunning national park with its 2000-3000ft sandstone walls, Zion National Park, Utah, United States of America (USA), North America

83-11956 - The 6904ft 'Beehives' in the western walls of the south end of Zion Canyon, in the most accessible part of this stunning national park with its 2000-3000ft sandstone walls, Zion National Park, Utah, United States of America (USA), North America