Yaaku is a critically endangered language spoken in Doldol and Mukogodo forest in the Rift Valley, Kenya by the Yaaku people.
It belongs to the Omo-Tana group of languages .
Yaaku language has approximately 10 native speakers.
A more detailed story about the Yaaku and plans to revive the critically endangered language is available here. (The article was first published in 2005, at which point the fluent speakers of the Yaaku language were elderly. As a result, the language may now be on the brink of extinction.).
Video of Nkapilil Supuko playing a Yaaku song:
The Yaaku people: