Serer-Ndut, an African language of the West Atlantic sub-group, spoken by people of the Serer-Ndut in the Mont-Roland region west of Theis, Senegal and in the Kingdom of Biffeche to the north. Also called 'Sereer Mont-Roland' after the Mont-Roland region where it is spoken. The Serer Ndut is one of several mutually-unintelligible variants of the Serer spoken in Senegal, like Serer-Sine, Serer-Safer, Serer-Ndut, etc. It has recently been classified as in the 'Cangin' language subgroup of the Serer.