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Mbule, also called Dumbule or Mbola, is an endangered Southern Bantoid language spoken by a few people in central Cameroon.
The language is spoken in Mbola village in the South Bokito commune, Mbam-et-Inoubou department of the Centre Region, Cameroon.
As reported in 2009, there were just 110 speakers of the language, none of whom were monolingual.
References
^ Mbule at Ethnologue (18th ed., 2015) (subscription required)