=Gebel Kolaiqo= is a small hill-mass lying off the south-eastern extremity of the Khashab — Beidâ range, from which it is separated by the Wadi Kreiga. Its highest point, marked by a triangulation beacon, is in latitude 22° 54′ 13″, longitude 35° 24′ 34″, at an altitude of 320 metres above sea-level. The drainage is mostly into Wadi Kreiga, but the south-eastern parts of the hills drain into Wadi Kolaiqo, a very shallow ill-defined drainage line coursing independently to sea across the sandy coast-plain. To the north of Gebel Kolaiqo there are two long lines of low hills forming low outliers of Nubian sandstone. =Ti Qireira= is the name given to two low hills rising from the coast-plain about half-way between Gebel Kolaiqo and the black conical hill of Gemeida. These hills, four kilometres apart, rise only some fifty or sixty metres above the plain, but they are conspicuous landmarks, and hence bear a name. =The Meisah — Adar Qaqa — Is Group.= The Meisah — Adar Qaqa — Is group of mountains extends northwards from the Sudan frontier in longitude 35½°. It is separated from the Gerf — Abu Hodeid masses to the north by the Wadi Hasium; on the east, the great Wadi Di-ib divides it from the mountains of the Elba group; while to the west it is not sharply marked off from the rather lower mountainous tract of the upper Alaqi basin. Gebels Adar Qaqa (1,469 metres) and Is (1,736 metres) are on the main watershed, while Hadal Aweib Meisah (1,224 metres) forms the highest point of a huge rugged spur running northwards on the east side of the watershed. To the east of the main mountains of the group, between them and the Wadi Di-ib, are a number of detached mountain and hill-masses, of which the principal are Gebels O Shakafa, Um Ein, Qara Saba, Warabeit, Adar Aweib, and Shiab.