The Tumma of Sudan, numbering approximately 10,000 people, are Engaged yet Unreached. They are a Nuba people, also called Sangali, of South Kordofan's Nuba Mountains, a region once part of the ancient Kingdom of Kush and medieval Alodia that served as a refuge for peoples of many tongues fleeing oppressive governments and slave traders. They mostly adhere to Sunni Islam and Katcha-Kadugli-Miri is their primary language.