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SOUTH AND EAST AFRICA.
yet they present such steep escarpments that they are not easily sealed. The peninsular tract enclosed between the Rovuma and its Lujenda affluent in the extreme north is relieved only by the lateral ridges of the Nyassa coast range from the generally monotonous and dreary aspect of the open plateau country.
River Systems.
The chief rivers traversing this plateau between the Zambese and the Rovuma
Fig. 83. — Lakes Kilwa Chiuta and Amaramba.
A thorn source either in the Namuli highlands or in the neighbouring heights. Such is the Walaga, which, under various names, flows first in the direction of the south-cast, then southwards, falling into the Indian Ocean some distance north
