Isanzu is a Bantu language of spoken by the Isanzu people south of Lake Eyasi

Lake Eyasi

Lake Eyasi is a seasonal shallow endorheic salt lake on the floor of the Great Rift Valley at the base of the Serengeti Plateau, just south of the Serengeti National Park and immediately southwest of the Ngorongoro Crater in the Crater Highlands of Tanzania...

 in Tanzania

Tanzania

The United Republic of Tanzania is a country in East Africa bordered by Kenya and Uganda to the north, Rwanda, Burundi, and the Democratic Republic of the Congo to the west, and Zambia, Malawi, and Mozambique to the south. The country's eastern borders lie on the Indian Ocean.Tanzania is a state...

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The position of Isanzu within the Bantu family is uncertain. It is rather distinct in certain features from other Bantu languages of the area, such as Nyaturu, but is quite close in others. One easily recognizable feature is /h/ in words where neighboring languages have /s/, as in the name Isanzu ~ Ihanzu, a feature it shares with Iramba, and it is commonly classified with Iramba.