Guy Edwardes / Natural Rock Pattern, Northumberland Coast, England
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Floris van Breugel / Colorful layers of rock on the inside of Mount St Helens' crater, seen from the rim. Washington, USA. May 2013
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Jouan Rius / Sandstone formations in Goblin Valley State Park, Utah, USA November 2012
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Jack Dykinga / Eroded Aztec sandstone, dating back to the Jurassic, 160 million years ago, colourful banding with fins and dikes produced by erosion, Mojave Desert near Las Vegas, Nevada, USA
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Konrad Wothe / Ochre quarry of Roussillon, Languedoc-Roussillon, Provence, Southern France, April 2006
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Jack Dykinga / Valle de la Luna, The Codillera de Sal, formed by layer upon layer of salt, sand and clay, creating strata that buckled with earth's crust and lined with sand dunes. Atacama Desert, Chile. April 2009
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Michel Roggo / Underwater landscape in Verzasca River, Ticino, Switzerland, September
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Wild Wonders of Europe / Radisics / Light snow on Prutas peak, Durmitor NP, Montenegro, October 2008
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Wild Wonders of Europe / Jensen / Mountainous landscape near Qullissat, Greenland, August 2009
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Jack Dykinga / Patterns on the walls of a slot canyon on the Navajo Indian Reservation, Antelope Canyon, Arizona, USA
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Jack Dykinga / Patterns on the walls of a slot canyon on the Navajo Indian Reservation, Antelope Canyon, Arizona, USA
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Jack Dykinga / Bands of red and yellow strata in petrified sand dunes, sunset, Paria Canyon-Vermilion Cliffs Wilderness, Arizona, USA
