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Shire Highlands

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Through Plateau

Geography

The highlands cover an area of roughly 7250 square kilometers. the plateau varies in elevation from 600 to 1100 meters, with various hills and mountains rising higher. The highest peak is Zomba Mountain at 2087 meters. The highlands are bounded on the west and south by the valley of the Shire River, an extension of the African Rift Valley. The Phalombe Plain slopes gently towards Lake Chilwa to the northeast, and separates the highlands from the taller Mulanje Massif to the east. Streams originating in the highlands drain west, south, and southeast towards the Shire River, or northeast into the closed basin of Lake Chilwa.

The highlands have a cooler climate and more rainfall than the surrounding lowlands, and are home to distinct forests, woodlands, and grasslands that make up the South Malawi montane forest-grassland mosaic.

The northernmost portion of the plateau includes a line of hills – Chinduzi, Mongolowe, Chaone, and Chikala – that extend 40 km east and west. The taller Zomba Plateau south of them. The northern hills are made up of syenite and nepheline syenite, and the Zomba plateau is made up of syenite and quartz syenite, which intruded into the much older Precambrian igneous and metamorphic rocks that compose much of the highlands. The central portion includes numerous hills and mountains, including Chiradzulu (1774 m), Ndirande (1613 m), Soche (1533 m), and Michiru (1474 m). Thyolo Mountain lies at the southern end of the highlands.

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