sentences:  Another major river, which joins the Sangha River, is the Dja River, which rises in west-central Africa and flows forming the border between Cameroon and the Republic of the Congo, and through the Dja Faunal Reserve, a UNESCO World Heritage site.The major river drainage is the Chari subbasin of the Congo Basin, which covers Cameroon and the Central African Republic.It drains into the Atlantic Ocean.