On the west side of the Nyanza the wall of the rift-valley runs close to the lake shore and at the N.W.
Both east and west the walls of the rift-valley are close to the lake,the water in many places washing the base of the cliffs.
The formation of the existing rift-valley seems in any case to date from Tertiary times only.
It receives many tributaries from the sides of the rift-valley, and is navigable for canoes.
It lies in the Albertine rift-valley between 0° 8' and 0° 40' S.
Gregory, The Great Rift-Valley (London, 1896); H.
Of the equator in the eastern rift-valley.
Along the eastern shore the low land extends to Kamarangu, a point about midway between the south and north ends of the lake, a considerable stretch of ground intervening between the wall of the rift-valley and the water, two terraces being clearly defined.
Lastly, between the basins of the Atlantic and Indian Oceans there is an area of inland drainage along the centre of the East African plateau, directed chiefly into the lakes in the great rift-valley.
Some volcanic islands; rift-valley volcanoes.