=Qash Amir= (“Scragged Hill” of the Admiralty Charts) is an isolated hill rising abruptly from a sandy plain at the head of Wadi Eikwan, about fifteen kilometres west-north-west of Gebel Elba. Qash Amir well deserves the title given to it by the Admiralty surveyors, for it is a mass of sharp granite spikes which my best guides, skilled climbers though they were, could only ascend with the greatest difficulty. Its top, marked by a beacon, is 724 metres above sea-level and has the position latitude 22° 14′ 31″, longitude 36° 12′ 20″. I had intended to occupy the summit as a main station, but the guides who were sent to erect the beacon reported that the summit was so sharp a spike that there was barely room for a beacon to be built, and that it would be impossible to set up a theodolite tripod on it, while there was not even a narrow ledge where one could sleep within several hundred metres of the summit. =Gebel el Sela= is a straggling group of high rugged granite hills rising from the sandy plain to the north-east of Qash Amir. The highest of its peaks reaches to 560 metres above sea-level. =Gebel Sul Hamid= is an extensive tract of low dark hills, covering some hundred square kilometres or so to the west of Qash Amir. Its highest peak is 572 metres above sea. The north part of the tract is drained by the Wadi Di-it, the eastern part by the Wadi Eikwan, while the southern drainages pass into a very shallow channel which courses westward over a sandy plain towards Wadi Di-ib, but becomes choked with sand at O Harbub before reaching that great trunk wadi. =Gebel Balatitda= is a group of high hills lying between Gebel Sul Hamid and the Wadi Di-ib. Its highest point is 592 metres above sea-level. Bir Meheriqa is situated at the south-west of the mass, on the east side of Wadi Di-ib. The north flanks of Gebel Balatitda are swathed in blown sand. =Gebel O Sir Eirab= is really the south part of Gebel Elba; its highest point is 842 metres above sea. Though its name Eirab means “white,” the mountain is composed of dark-coloured rocks. The explanation is that the Arabs always give the names to the wadis first, and the adjacent Wadi O Sir Eirab has a white sandy floor because it drains from the granite mass of Elba; the mountain is called after the wadi near it.