petroglyphs

Writing:

Introduction As far as we know, the Nabataeans were not great writers of books. Very little literature has passed down to us. We have no literature from the early years, and the famous Petra Scrolls …

Sahara Desert's Changing Climate:

Evidence has shown that the Sahara desert was at one time a fertile plain. Between 7000 and 2000 BC the plains were fertile and rich with wild life. The lakes reached their maximum extent around 3,500 …

Petroglyphs:

It has been assumed by archeologists and historians that the petroglypth method of writing and communication preceded writing in general, and that once writing systems were developed that the use of …