Earlier this year, satellite images revealed almost 300 ancient stone circles across the Atbai Desert, tracing a nomadic pastoralist culture that preceded and later lived alongside Egypt’s pharaohs. Researchers believe these communities likely left permanent monuments across the landscape they roamed. The findings help archaeologists piece together the long-overlooked desert history of prehistoric Northeast Africa. Learn more about the ancient communities that once thrived in the Sahara: https://on.natgeo.com/xFxKTL