"The Eastern Jebel languages are a small subfamily belonging to the Eastern Sudanic subgroup of Nilo-Saharan. They are spoken in the hills of An Nil al Azraq province in eastern Sudan (the name \"Jebel\" is simply Arabic for \"mountain\".) The group consists of:Gaam (also called \"Ingassana\" or \"Tabi\")Aka (Silak)Kelo (Tornasi)Molo (Malkan).Gaam has some 40\u201380,000 speakers, whereas the other three are on the verge of extinction."@en . . .