Olduvai Gorge and Laetoli are two important archaeological sites located in northern Tanzania that provide insight into human evolution and the history of early humans in Africa.
Olduvai Gorge, also known as the Oldupai Gorge, is a steep-sided ravine that is about 48 kilometers long and is located in the Great Rift Valley. The gorge is known for the many important archaeological discoveries made there, including the fossils of early humans and their ancestors. It was at Olduvai Gorge that the Leakey family discovered the remains of Homo habilis, one of the earliest known human ancestors, in 1960.
Laetoli, on the other hand, is a site located about 45 kilometers south of Olduvai Gorge. It is known for the discovery of a set of footprints made by early humans about 3.6 million years ago. The footprints were discovered in 1976 and are thought to have been made by Australopithecus afarensis, a species of early human that is also known for the discovery of the famous "Lucy" skeleton.
Both Olduvai Gorge and Laetoli are important sites for the study of human evolution and the history of early humans in Africa. They are open to the public and visitors can see some of the fossils and other artifacts that have been discovered at these sites.