The Adrar is an arid plateau, known for its gorges, regs (stony deserts) and sand dunes. Structurally the Adrar is a low central massif which rises to over 700 m (2,297 ft) above sea level just east of Atar near the Amojjar Pass on the track to Chinguetti, then loses elevation

The Richat Structure, or Guelb er Richât (Arabic: قلب الريشات, romanized: Qalb ar-Rīšāt, Hassaniyya: [galb er.riːʃaːt] ⓘ), is a prominent circular geological feature in the Adrar Plateau of the Sahara. It is located near Ouadane in the Adrar Region of Mauritania.

2024年3月15日 · Known as the Richat Structure — or, more commonly, the Eye of the Sahara — this massive geological formation resembles a giant eye. Consisting of a series of rings on the Adrar Plateau, a prominent feature in northwestern Mauritania, the structure measures 31 miles (50 km) in diameter, making it highly visible even from high above Earth.

2023年6月5日 · The darker regions on the left represent the Adrar plateau, about 200 meters above the sandy part of the desert. Eye of the Sahara image courtesy of U.S. Geological Survey. It shows the outer southeastern part partly covered by sand.

2024年5月31日 · The center of the Eye of the Sahara is a round plateau of limestone and breccias — sedimentary rocks with large, broken fragments that are cemented together by a fine-grained matrix — according...

Adrar, traditional region of central Mauritania in western Africa. It consists of a low central massif with noticeable cliffs that rise to about 800 feet (240 m). The terrain is arid and almost totally unsuitable for cropping.

2023年11月24日 · Location and Geography: The Eye of the Sahara is situated in the Adrar Plateau, a rocky region of Mauritania in northwestern Africa. Its coordinates are approximately 21°07’N latitude and 11°22’W longitude.

2014年5月6日 · The image shows the Adrar plateau on the left side with darker sedimentary rocks. The lower portion of the images shows the erg (sand dunes). Despite the dry and inhospitable look of this region of the Sahara Desert the southern part of the Richat Structure shows the presence of vegetation in the form of trees and bushes as well as temporary ...

The Eye of the Sahara, also known as the Richat Structure, is a prominent geological wonder in the Adrar Plateau of the Sahara Desert, Mauritania. It's not an impact crater, as once believed, but rather an eroded dome with concentric rings.

2021年7月1日 · The Richat Structure is located in the Sahara Desert’s Adrar Plateau. This part of the Sahara is situated within the west-central region of the country of Mauritania, and the nearest settlement to the Richat Structure is the small town of Ouadane.