The boundary starts in the north at the tripoint with Chad and proceeds overland in a south-easterly direction, turning south in the vicinity of the Kafia Kingi region, a region disputed with South Sudan but which is currently under Sudanese administration.[2] The border then consists of series of irregular lines over hilly terrain, turning sharply to the east and then proceeding to the current de facto South Sudanese tripoint.[3] The boundary roughly follows the division between the Nile and Congo drainage divided.[3]