Though greatly shrunk within its former limits, the Anglo-Egyptian Soudan is still of very great extent. On the north the boundary with Egypt is now the twenty-second parallel, following this line, which passes just north of Wadi Halfa, right across the desert to the Tripoli border on the west, and to the Red Sea on the east. It then follows the coast past Suakin as far as a point about seventy miles south of Tokar, where it meets the Italian colony of Eritrea. Here, turning inland, it runs south-west, crossing the river Gash just above Kassala, down to a point on the Setit River, another tributary of the Atbara. Here Abyssinian territory begins, and the boundary trends more to the south than before, going by Gallabat and crossing the upper waters of the Rahad and the Dinder, tributaries of the Blue Nile, till it reaches the Blue Nile itself just above Famaka and Fazokhl. Hence it runs right south to the west of the Beni Shangul hills, across the Baro, Pibor, and Akobo rivers, all in the Upper Sobat district, till it reaches a point where the sixth degree of north latitude cuts the thirty-fifth degree of longitude east of Greenwich. The sixth parallel is roughly the line of division between the Soudan and the Uganda Protectorate as far as the Nile, the southernmost Soudanese post on the Nile being at Mongalla, and the northernmost British at Gondokoro. On the other side of the Nile the boundary, starting from Lake Albert, runs north-west for a very long distance along the Nile-Congo watershed, first along the Congo Free State, then along French Congoland, till it reaches the borders of Darfur. The corner, however, between the Nile and this line, as far west as the thirtieth degree of longitude east, and as far north as a point nearly opposite Mongalla, is known as the Lado Enclave, and is still held by the Belgians, being leased by them during the life of King Leopold. On reaching Darfur the boundary runs northwards along the western edge of that country to about the thirteenth parallel, and thence north-west across the desert to the borders of Tripoli.