=Gebel Um Sedri= is a remarkable pair of twin peaks on or near the main watershed seventeen kilometres north-west of Gebel Abu Hamamid, and a little to the south of the Wadi Huluz. These peaks, which are 970 metres above sea-level and about 460 metres above the floor of Wadi Huluz, are very conspicuous from the surrounding high country, but they cannot be seen from the Wadi Huluz itself as they lie a little way back from the scarps which bound the gorge. It is the drainage from the hills round Gebel Um Sedri which feeds the water holes of Um Gerifat, in a little gorge opening to Wadi Huluz about two kilometres north-west of the peaks. =Gebel el Heda= is a conspicuous hill situated ten kilometres north-north-west of Gebel Metawit, between the Wadis Antar and Khashab. Its highest point is 862 metres above sea-level. =Gebel Nukheira= is a group of high hills on or near the main watershed, close to the head of Wadi Antar and about ten kilometres north-north-west of Gebel el Heda. Its highest point is 876 metres above the sea. =Gebel Ras Abu Etl= is a lower hill seven kilometres north-east of Gebel Nukheira. As seen from the upper part of the Wadi Gemal it appeared to have a flat top, which is 648 metres above the sea. It is probably drained by the short Wadi Abu Etl, which joins Wadi Huluz to form the Wadi Gemal. =Gebel Um Suerab= is a great high ridge of dark looking rocks, surrounded by high flanking hills, rising conspicuously in the hilly country between the Wadis Huluz and Gemal, about twenty-four kilometres north-north-west of Gebel Abu Hamamid. The top of its ridge, which appears to be nearly level for about a kilometre of its length, is 1,024 metres above sea-level. From its neighbourhood drain two wadis in opposite directions; one, called the Wadi Um Suerab lil Gemal, goes northward to join Wadi Gemal, while the other, called Wadi Um Suerab lil Huluz, is the longer and courses southward to join Wadi Huluz. =Gebel Durunkat= is another apparently flat-topped hill eight kilometres south-east of Gebel Um Suerab, on the west side of the Wadi Durunkat, about thirteen kilometres above its junction with Wadi Gemal. Its summit is 924 metres above sea-level. =Gebel Abarun= is a mountain range situated a short distance north-east of Gebel Abu Argub, from which it is separated by the Wadi Abarun. Its highest peak, almost due east of that of Abu Argub, from which it is separated by the Wadi Abarun, is 1,602 metres above sea, and overlooks the great plain of Selaia to the south. =Gebel Um el Tiur= is a range extending south-east from Gebel Abarun, forming a southward prolongation of the mountains. Its highest peak is 1,450 metres above the sea, while the terminal peak southward is 1,080 metres. It is drained on the west by the Wadis el Shel and el Anbat (tributaries of Wadi Kharit) and on the east by the Wadi Um el Tiur (a tributary of Wadi Hilgit lil Kharit).