Marking a rent in Africa's ancient crust, the Great Rift Valley's deepest parts are filled by various water bodies, of which Lake Malawi is the southernmost. Along the lake edge, the rift's escarpment descends steeply into the waters, so that good mooring locations are few. Monkey Bay, towards the south of the lake, is one of the most important. Here, the MV Ilala 2 begins its weekly journey, ferrying goods and passengers the length of the lake. Contrary to its name, there are not many monkeys here, but baboons roam the lake shore in substantial numbers.