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Created by Boundless
Rock Art in the Sahara
Petroglyph at Balho, Djibouti
Djibouti lies on the eastern edge of the Sahara desert, which has not supported foliage-dependent animals like giraffes for approximately 10,000 years. This image informs us that the Sahara was once a grassland that contains plant life similar to that of modern sub-Saharan Africa.
Source
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"478px-Rock_art_at_Balho.jpeg."
https://commons.wikimedia.org/w/index.php?curid=35163887
Wikimedia Commons
CC BY-SA 4.0.