January 16, 1938. 10 miles northwest of Shinyanga, Tanganyika: A curiosity of water conservation. The long rock outcrop possesses a natural fissure that holds water after rain. To augment the supply, a low wall has been built on top of the rock, thus increasing the area of catch. Natives climb the sides, then descend by me ans of a set of steps to the basin and bear away drinking water for themselves and their animals in great jugs carried on their heads. c. 4500 feet.