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The Ouarkziz crater, Algeria

Earth Observation | Copernicus
Land cover
Nature
The Ouarkziz crater, Algeria
Location: Algeria
Credit: European Union, Copernicus Sentinel-2 imagery

The Ouarkziz crater in western Algeria is a well-preserved impact structure formed approximately 70 million years ago. Measuring around 3.5 kilometres in diameter, the crater was created when a meteorite struck what is now the Sahara Desert, leaving a circular depression still visible today. The impact deformed the sedimentary rock layers, forming concentric rings which are a distinguishing geological feature. Erosion has since exposed the internal structure, providing valuable insights into impact processes and the Earth’s geological history.

The Ouarkziz crater is visible in this Copernicus Sentinel-2 image acquired on 1 March 2025.

The Copernicus Sentinel satellites play a key role in monitoring remote regions worldwide by delivering essential data about their conditions. This information is essential for tracking changes in these areas and studying geological processes.