What Is the Eye of the Sahara?

www.thoughtco.com

For centuries, only a few local nomadic tribes knew about the formation. It was first photographed in the 1960s by the Gemini astronauts, who used it as a landmark to track the progress of their landing sequences. Later, the Landsat satellite took additional images and provided information about the size, height, and extent of the formation.

Geologists originally believed that Eye of the Sahara was an impact crater, created when an object from space slammed into the surface. However, lengthy studies of the rocks inside the structure show that its origins are entirely Earth-based.

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