1911 Encyclopædia Britannica (1911)
“ The Ulanga is formed by a number of streams descending from the outer escarpment of the high plateau which runs N..E. from the head of Lake Nyasa and in Uhehe becomes broken up .in ranges of mountains. The most important head-stream, the Ruhudye, rises in about 9° 30′ S., 34° 40′ E. As a whole, the Ulanga valley is broad, level and swampy, the river running in a very winding course and sending off many diverging arms. ”
