=Gebel el Abiad= is the name given to two distinct ranges of high granite hills on either side of the Wadi el Abiad, north and east of Gebel Um Heshenib. The eastern of these two ranges extends in a north-westerly direction for about twelve kilometres from Gebel Tarfawi to near the place where Wadi el Abiad turns to the north-east. It has numerous peaks, of which the most conspicuous is at the south-east end of a high ridge six and a half kilometres north-east of Gebel Um Heshenib, and rises to 957 metres above sea. This eastern range is drained from the west by the Wadi el Abiad, and from the west by the Wadis Shoab and Romit. The western range is slightly lower and less extensive; one of its most conspicuous peaks, eleven kilometres north-north-east of Um Heshenib, is 892 metres above the sea, and there are numerous other peaks further south of almost equal altitude. This western range is almost entirely drained by the Wadi el Abiad, a feeder of which curves round the south end of the range, thus separating it from Gebel Um Heshenib; the drainage from the north end probably passes into the Wadi Mukhatatat, while a portion of the eastern slopes may be drained by feeders of Wadi Durunkat. It is the coarse white granitic sand resulting from the disintegration of the rocks of these hills which gives its name to the Wadi el Abiad, and the hills take their name from the wadi. The heads of the wadi near Gebel Um Heshenib are, however, blackened by hornblendic downwash from the schists which overlie the granite of that mountain. =Gebel Shoab= is a very high white granite hill close to the head of Wadi Shoab, on its north side. It rises to 830 metres above the sea, or about 400 metres above the wadi floor. =Gebel Hefeiri= is a very sharp granite peak a little west of the Wadi Abu Ghusun, about fifteen kilometres north of Hamata. Rising to 612 metres above the sea, or about 300 metres above the wadi near it, among lower granite hills, it is a good landmark. There is a smaller very sharp peak two and a half kilometres to the north-east, on the opposite side of the Wadi Abu Ghusun, while to the west are sugar loaf shaped hills. =Gebel Um Sueh= is a conspicuous granite hill six and a half kilometres east of the Wadi el Abiad and four and a half kilometres north of the Wadi Shoab, rising to 781 metres above sea. It is probably drained from the north-east by the heads of Wadi Um el Abbas. =Gebel Um el Abbas= is a very remarkable granite hill between Gebels Um Sueh and Abu Hegilig. From the north, it looks like a square block with precipitous sides, having a sheer drop of about 200 metres. Its summit is 697 metres above sea. It is drained by the Wadi Um el Abbas, which goes independently to the sea.