Deriba Caldera is at the highest point of Jebel Marra at an elevation of 3,042 m (9,980 ft), in Darfur in the western part of Sudan. The caldera rim became Sudan's new highest point, after the independence of South Sudan. It is between 5 km and 8 km in diameter across the outer crater. The inner crater is filled by a crater lake.The Marra Mountains are part of a large geologic feature known as the Darfur Dome.