Ounianga Lakes

Borkou Region, Chad

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The Ounianga Lakes, located in the Borkou Region of northeastern Chad, are a remarkable group of 18 lakes scattered across the heart of the Sahara Desert.

Despite receiving less than 2 millimeters of rainfall per year, the lakes are sustained by ancient underground groundwater reserves, creating an extraordinary landscape of blue, green, and reddish waters surrounded by dunes and desert cliffs. The lakes vary in size, depth, and salinity, with some containing fresh water while others are highly saline. This unique hydrological system supports vegetation, wildlife, and human settlements in one of the driest environments on Earth.

Recognized as a UNESCO World Heritage Site in 2012, the Ounianga Lakes are celebrated for their exceptional natural beauty and scientific importance. They provide rare evidence of the Sahara’s wetter past and stand as one of the world’s most unusual and impressive desert landscapes.