The spectacular Uluguru Mountains are part of the Eastern Arc range, named after the Luguru tribe, who farm on its fertile slopes. Rising before the central Tanzanian plateau the mountains divide the agricultural area around the important town of Morogoro and the great Selous game reserve. The area has some of the oldest and most beautiful forest in Africa, and because the ecosystem has remained undisturbed by climactic and geographical changes for an estimated 25 million years, hiking in the area is particularly rewarding. A plethora of endemic bird and insect species are found here, and many of the unique geological deposits have yet to be completely studied.