A purple canyon with a dry creek in between hills of bentonite in Petrified Forest National Park, Arizona, United States of America, North America

Eroded hills of sedimentary conglomerate and sandstone, Unesco World Heritage, Zhangye, China

Cave of Harpea, anticlinal formed in limestone, Basque Country, Pyrenees, France

Cliff with remarkable stratifications, folded layers of marls and limestones of the Lower Jurassic, above Bassey near Bourg d'Oisan, Ecrins NP, Alps, France

Remarkable flysch formations of Deba, Basque Coast Geopark, Basque Country, Spain. Flysch formed at the end of the Mesozoic era in the Cretaceous - flyschs are formed by sediment accumulation following repeated submarine avalanches, due to earthquakes, and producing after compaction and crystallization very regular layers of sandstone and limestone here recovered by Pyrenean orogeny and released by erosion.

Remarkable flysch formations of Deba, Basque Coast Geopark, Basque Country, Spain. Flysch formed at the end of the Mesozoic era in the Cretaceous - flyschs are formed by sediment accumulation following repeated submarine avalanches, due to earthquakes, and producing after compaction and crystallization very regular layers of sandstone and limestone here recovered by Pyrenean orogeny and released by erosion.

Drainage system on the surface of the ice sheet. The brown sediment on the ice is created by the rapid melting of the ice. Landscape of the Greenland ice sheet near Kangerlussuaq. America, North America, Greenland, danish territory

Drainage system with lake on the surface of the ice sheet. The brown sediment on the ice is created by the rapid melting of the ice. Landscape of the Greenland ice sheet near Kangerlussuaq. America, North America, Greenland, danish territory

Cliff with remarkable stratifications, folded layers of marls and limestones of the Lower Jurassic, above Bassey near Bourg d'Oisan, Ecrins NP, Alps, France

Midnight sun on the ice sheet. The brown sediment on the ice is created by the rapid melting of the ice. Landscape of the Greenland ice sheet near Kangerlussuaq. America, North America, Greenland, danish territory

Antelope Canyon. The Upper Antelope Canyon, 2 to 3 m wide and 400 m long, managed by the Navajo Indian tribe, Arizona, USA.

The Upper Antelope Canyon, 2 to 3 m wide and 400 m long, managed by the Navajo Indian tribe. Antelope Canyon. Arizona. USA.

Keldudalur and Gjalpardalur in Dyrafjoerdur. The Westfjords (Vestfirdir) in Iceland during autumn. Europe, Northern Europe, Iceland

Iconic golden cliffs West Bay and Hive Beach Burton Bradstock Jurassic Coast Dorset UK

Tourists visiting the Upper Antelope Canyon, 2 to 3 m wide and 400 m long, managed by the Navajo Indian tribe. Antelope Canyon. Arizona. USA.

Iconic golden cliffs West Bay and Hive Beach Burton Bradstock Jurassic Coast, Dorset, UK

Drainage system on the surface of the ice sheet. The brown sediment on the ice is created by the rapid melting of the ice. Landscape of the Greenland ice sheet near Kangerlussuaq. America, North America, Greenland, danish territory