Sahara Desert dairy farming??

Early African dairy farms prospered in once-green Sahara

About 10,000 years ago, the Sahara desert went through a phase called the Holocene African Humid Period. Fossilized bones show that by the sixth millennium B.C. (or about 7,000 years ago), cattle, sheep and goats roamed over green savanna, and rock art depicts cows with full udders. The occasional image even shows milking, said study researcher Julie Dunne,

Dunne and her colleagues have now shown that these early herders were not only milking their livestock, but also processing that milk into products like yogurt, cheese and butter.