John Shaw / Shoreline of Lake Powell, seen from Alstrom Point on Romana Mesa. Glen Canyon National Recreation Area, on the Arizona/Utah border, USA, January.
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Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.
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Jack Dykinga / Erosion sculpted 'pot-hole' with reflection of clouds at sunset, Muley Point, Cedar Mesa, Bears Ears National Monument, Utah, USA, October 2018.
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Jeff Foott / The Citadel Ruins, Cedar Mesa area, Bears Ears National Monument, Utah
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Jouan Rius / Petrified wood segment, Blue Mesa Badlands, Petrified Forest National Park, Arizona, USA, December 2012.
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Yva Momatiuk & John Eastcott / Cirrus and cumulus clouds over mesa, Monument Valley Navajo Tribal Park, Arizona
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Tim Fitzharris / Sierra Ponce and Rio Grande, Big Bend National Park, Texas
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Graham Eaton / The Carboniferous age Limestone escaprpment of Warrendale Knotts near Settle, North Yorkshire, UK, October
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Juan Carlos Munoz / Mesa Verde's Petroglyph Point, Mesa Verde National Park, Unesco World Heritage Site, Colorado, USA. October 2016.
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Juan Carlos Munoz / People climbing up ladder at Balcony House, Mesa Verde National Park UNESCO World Heritage Site, Colorado, USA. October.
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Juan Carlos Munoz / Mesa Verde National Park UNESCO World Heritage Site, Colorado, USA. October.
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Juan Carlos Munoz / Cliff Palace, Mesa Verde National Park, UNESCO World Heritage Site, Colorado, USA. October.