The Bafing rises in the Futa Jallon highlands about 2400 ft.
They are most numerous in Upper Senegal and in the countries under French sway immediately south of Senegambia, notably Futa Jallon.
While the coast lands are either densely forested or covered with savannas or park-like country, the Futa Jallon tableland is mainly covered with short herbage.
East and south of Futa Jallon the country slopes to the basin of the upper Niger, the greater part of which is included in French Guinea.
Besides the Niger, Gambia and Senegal, all separately noticed, a large number of streams running direct to the Atlantic rise in Futa Jallon.