Anyone who is interested in anything related to humankind will find this book fascinating.
Excerpt from the dust jacket:
Tribes of the Great Rift Valley, likely to be the last ethnographic tome of its genre, is the epic photographic record of African heritage in the remote environs of the Great Rift Valley, a region recognized by scientists as the birthplace of humankind. All people share an ancestral link to this unique geography where the fossil remains of four million years of human history lay scattered across 3,500 miles of territory stretching from Eritrea to Mozambique, revealing the story of our evolution on earth.
Tribes of the Great Rift Valley, amazon.com, $75.00