mountains in Mulanje District, southeastern Malaŵi. They rise abruptly from the surrounding plateau in an almost rectangular syenite mass measuring 12 mi (19 km) across and overlook the Lake Chilwa–Phalombe Plain to the northeast. Mulanje Peak reaches a height of 9,848 ft (3,002 m), the highest point in Malaŵi; other peaks include Manene (8,695 ft), Chinzama (8,391 ft), and Chambe (8,385 ft). Two outliers, Mchese to the northeast and Chambe to the northwest, are both eroded ring structures. Erosional features are characteristic and include plateaus, deep narrow clefts, and crater-like hollows. The numerous mountain streams drain into the Ruo River system and Lake Chilwa. Red soils support a dense canopy of short, broad-leaved trees crowned by stands of Mulanje cedar (Widdringtonia whytei) at its northernmost occurrence in Africa. These trees grow on steep slopes and ravine walls and often reach heights of more than 100 ft and base diameters of 6 ft. Although access is difficult, they are an important factor in the forestry industry. Bauxite deposits occur on the plateaus, and the southern slopes support tea plantations.