25 Most Bizarre, Surreal Natural Wonders on Earth


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4. Structure de Richat – Mauritania

Image source: Pixabay.com

Forty kilometers in diameter, The Richat Structure or Eye of the Sahara is in Mauritania, in north-west Africa. Scientific findings indicate the dome formation is a result of the hydrothermal activity in the area. Other theories on its formation have included the impact of an asteroid or another type of extraterrestrial life!


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