Discover ancient rock art depicting prehistoric life on Algerian cave walls.

The Sahara once bloomed

After the Ice Ages, the desert turned green and people returned. Rock art at Tassili n'Ajjer shows a lush Sahara 10 millennia ago.

Africa: When the Sahara Was Green

A solitary tree stands against a cracked, arid landscape under a cloudy sky, illustrating drought and desertification.

Then the sky changed

Around 3500 BC, a tilt in Earth’s orbit drove a climate flip. Sand surged in a period of rapid desertification.

Africa: When the Sahara Was Green

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