Engaruka

Engaruka is an abandoned system of ruins located in northwest Monduli District in central Arusha Region. The site is in geographical range of the Great Rift Valley of northern Tanzania. Situated in the Monduli District, it is famed for its irrigation and cultivation structures. It is considered one of the most important Iron Age archaeological sites in Tanzania. The site is located in the ward of Engaruka. The site is registered as one of the National Historic Sites of Tanzania.

==The site== Sometime in the 15th century, an Iron Age farming community built a large continuous village area on the footslopes of the Rift Valley escarpment, housing several thousand people. They developed an intricate irrigation and cultivation system, involving a stone-block canal channeling water from the Crater Highlands rift escarpment to stone-lined cultivation terraces. Measures were taken to prevent soil erosion and the fertility of the plots was increased by using the manure of stall fed cattle. For an unknown reason Engaruka was abandoned at latest in the mid-18th century. The site still poses many questions, including the identity of the founders, how they developed their farming system, and why they left.