Bir Tawil,unclaimed territory, c.795 sq mi (2,060 km), along the E Egypt-Sudan border W of the Halayeb Triangle. Its unclaimed status arose from the peculiarities the disputed border: Bir Tawil lies S of the border claimed by Egypt, and N of the border claimed by Sudan (see Halayeb TriangleHalayeb Triangle
or Hala'ib Triangle,
roughly triangular disputed territory, c.7,950 sq mi (20,590 sq km), along the Egypt-Sudan border, on the Red Sea coast. Claimed by Egypt and Sudan, and under the de facto control of Egypt, it is named for the town of Halayeb,
..... Click the link for more information. ). Small mountains in the territory include Jabal Tawil (1,507 ft/459 m) in the north and Jebel Hagar ez Zarqa (2,172 ft/662 m) in the east.