=Gebel Abu Hodeid=, which forms a higher southward extension of Gebel Abu Hireiq, is really two ranges with the Wadi Abu Hodeid draining between them. The western range is the higher, its summit, marked by a beacon in latitude 22° 23′ 18″, longitude 35° 14′ 9″, being 1,482 metres above sea. The highest point of the eastern range is 1,256 metres above sea. The south termination of this eastern range is a very conspicuous rounded peak of granite, 992 metres above sea, called =Abu Hodeid Ogla=, which forms a good landmark for travellers in making the wells of Abu Hodeid; the wells lie west of this peak. The south parts of the Abu Hodeid mountains are drained by the Wadis Shinai, Delawet, and Abu Hodeid, all feeders of Wadi Hasium, and all leading to important water sources. The eastern faces are drained by Wadis Abu Hireiq and Tikraneib, which are likewise feeders of Hasium, while the western flanks are drained by feeders of Wadi Feqoh. The broad opening where Wadi Hasium passes to the south of the range makes a natural division separating the mountains of Abu Hodeid from those of the Adar Qaqa group. =Gebel Mansur Diab=, a dark mountain, 1,091 metres high, lying six kilometres west of Gebel Abu Hodeid, is not often visible from the east, being hidden by the higher ranges in front of it; but it forms a conspicuous landmark to any one approaching from the west. To the south of Gebel Mansur Diab, between the heads of Wadi Feqoh and Wadi Hasium, are some other mountains of considerable height, the positions of whose summits were fixed by triangulation, but which were not closely approached. These are =Gebel Hadal Derqa= (1,108 metres), which as seen from the north appeared like a hog-backed dark ridge with a conical semi-detached hill at its south-east end; and =Gebel Hilwit Hasium=, which appeared to consist of two separate peaks some three and a half kilometres apart, the higher or north-east one rising to 1,037 metres, the south-west one to 952 metres above sea.