Many don't know, but the Desert of Sahara accumulates a series of enigmas to be solved by researchers.
There are, for example, huge designs and patterns etched into the desert sands, which remain largely unexplained.
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There it is also possible to come across ruins of underground cities, such as Deir Almedina, which were used to shelter populations in search of protection and resources.
Other mysteries surround Egyptian mummies found in tombs hidden in the desert, raising questions about the extent of Ancient Egypt's influence in the region.
The discoveries of paleontologists indicate that the region was once a place of great humidity and, consequently, more conducive to life than it is today.
Given this diversity, the Sahara is a place that always attracts researchers and adventurers. Now, the most obvious enigma in the region is about the mysterious “Eye of Sahara“. But what is this? Understand better below!
Located in the vastness of the Sahara Desert, close to the city of Ouadane, in Mauritania, lies a truly unique geological formation that has intrigued the scientific community.
Known as the “Eye of the Sahara” or “Ricat Circular Structure”, this phenomenon has a circular shape that covers more than 40 kilometers in diameter.
(Image: NASA/Reproduction)
The story behind the “Eye of the Sahara” includes its first mention during a French military mission in the 1930s in the central Mauritanian highlands region of Adrar.
However, a complete view of this unique structure was only possible in 1965, when Earth's Gemini IV mission NASAprovided a more detailed observation.
Seen from above, the “Eye of the Sahara” reveals a notable depression surrounded by concentric circles of geological ridges, making it a striking feature in the landscape.
(Image: NASA/Reproduction)
The relevance of the “Eye of the Sahara” reached a new level last year, when it was officially recognized as a geological heritage by the International Union of Geological Sciences.
Its composition dates back approximately 1.5 billion years ago, during the late Proterozoic period, when Geological processes have led to the accumulation of oxygen in the lithosphere, resulting in the formation of oxides such as silicon and iron.
Interestingly, the structure's makeup houses a mix of sedimentary and magmatic rocks, a combination that has intrigued geologists over the years.
Although it was widely debated, for a long time, the prevailing theory suggested that the “Eye of the Sahara” was created due to a meteorite impact.
However, the absence of evidence of rocks altered by the shock wave led to the rejection of this theory.
Currently, the most accepted hypothesis is that such a remarkable formation arose as a result of the action of wind and water on a high geological dome, also known as a domed anticline.
(Image: NASA/Reproduction)
These rocks they would have originated from intrusive magmatic activities, with erosion over millennia culminating in the creation of the concentric ridges we see today.
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