Totoga

It [Mto wa Mbu] has long been a trading centre where many different people have settled, notably the Mbugwe, Iraqw, Gorowa, Irangi, Totoga, Chagga and Maasai. The area ... is in fact the most linguistically diverse and complex in Africa. It is the only place in the continent where the four major African language families - Bantu, Khoisan, Cushitic, and Nilotic - occur together.