The most ancient people Following the last glacial period, the Sahara transformed into a savanna with trees, lakes, and rivers.

The genomes of two women who lived 7,000 years ago in the Sahara when it was a green savannah reveal a remarkably isolated population.

About every 21,000 years, the Sahara becomes a lush woodland. During the last period ending about 5,000 years ago, an enigmatic people lived here.