In this lonely valley called Tazerzaït, where the Aïr Massif meets the great sand seas of the Sahara, the ... and mammoth outcroppings of glassy marble and obsidian that breach the sand like ...
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Earth from space: Wandering sand dunes circle gigantic 'eye' sculpted by ancient city-killer meteor in the SaharaThis 2013 astronaut photo shows a giant eye-shaped impact crater in the Sahara Desert that is slowly being circled by ...
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