Southern Rift Valley References Southern Rift Valley valley, Africa Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: East African lakesOccupying the Southern Rift Valley is Lake Nyasa (Lake Malawi), which drains into the Zambezi River. Marking the course of the Western Rift Valley are Lakes Tanganyika, Kivu, Edward, and Read MoreOccupying the Southern Rift Valley is Lake Nyasa (Lake Malawi), which drains into the Zambezi River. Marking the course of the Western Rift Valley are Lakes Tanganyika, Kivu, Edward, and Read More