Richat Structure, satellite image
Richat Structure, satellite image. North is at top. Desert sands are pale yellow/white (top left and lower right), while less sandy, rocky areas are green, and volcanic rocks are blue. The Richat Structure is an eroded volcanic dome in the deserts of Mauritania. As the volcanic dome eroded, these onion-like layers of rock were exposed. The structure is 485 metres high, and nearly 50 kilometres across. It is in the Maur Adrar Desert, in the Western Sahara. The area shown in this image is around 66 kilometres wide. The image data includes infrared wavelengths, and was obtained on 11 January 2001, by the Landsat 7 satellite.
© NASA/SCIENCE PHOTO LIBRARY
Eroded sandstone pillars
Eroded sandstone pillars in a desert.Wind intensity increases around the base of therocks, increasing erosion of the rock and forming abowl-shape hollow (deflation hollow) in the sand.The flaked appearance of the rock's surfaceis due to weathering. Photographedin Tagrera, Sahara Desert, southern Algeria.
© David Parker/Science Photo Library
Eroded sandstone rock formations with Dromedary camels (Camelus dromedarius
Eroded sandstone rock formations with Dromedary camels (Camelus dromedarius) grazing on new grass after desert rains. Ennedi Natural And Cultural Reserve, UNESCO World Heritage Site, Chad. September 2019.
© Enrique Lopez-Tapia / naturepl.com
Africa, Animal, Animalia, Artiodactyla, Camel, Camelid, Camelidae, Camelus, Camelus Aegyptiacus, Camelus Dromas, Camelus Dromedarius, Camelus Ferus, Central Africa, Chad, Desert, Domestic Camel, Domesticated, Dromedary Camel, Even Toed Ungulates, Geology, Landform, Landscape, Mammal, Mammalia, Monolith, Pinnacles, Protected Area, Rock, Rock Formations, Sahara, Sahara Desert, Sandstone, The Pinnacles, Tylopoda, Unesco World Heritage Site, Vertebrate, Wildlife