Gebel Abu Sieiyil is a many-peaked hill range running north and south for about four kilometres, situated eight kilometres west of the beacon on Gebel Abu Dahr. It has the appearance of being composed of a pink gneiss, but has not been visited. Its central peak, fixed by triangulation, is 833 metres above sea. The Wadi Abu Beid el Azrak runs south-westward past the south end of the range, through a gap between it and a smaller hill range to the east.
Gebel Arais is a considerable range of gneiss peaks situated on the east side of Wadi Naam in latitude 23° 34′. One of the most conspicuous of its many summits is a pair of twin peaks near the south end of the range, rising to 613 metres above the sea. The range is cut through from east to west by the narrow and winding Wadi Arais, a tributary of Wadi Naam. The drainage from the western faces of the range passes by many feeders over a sandy plain to join the Wadi Naam directly.
Gebel Belamhandeit or Erf Um Araka is a long range of granite or gneiss hills north of Gebel Arais. It extends for a length of nine kilometres in a north-and-south direction on the meridian of 34° 50′. It is drained on the north and west by the Wadi Erf Um Araka, a tributary of Wadi Naam, and on the east by the Wadi Belamhandeit, a tributary of Wadi Arais.
To the east of Gebel Belamhandeit are several granite bosses, of which the most conspicuous is called Gebel Um Guruf; it is drained by the Wadi Um Guruf, a tributary of Wadi Arais.
Gebel Orga, eighteen kilometres south by east from Gebel Abu Dahr, is a high dark-looking range which has not been closely approached. Its highest peak, surmounted by a beacon, the position of which has been fixed by triangulation, as latitude 23° 26′ 21″, longitude 35° 8′ 17″, is 682 metres above sea-level. It is drained by the Wadi Orga (a tributary of Wadi Hodein), which contains the well called Bir Orga.
Gebel Um Tenedba is a mass of dark hills of crushed basic rocks situated thirty kilometres south by east from Gebel Abu Dahr and twelve kilometres north of the Wadi Hodein. Its highest point, marked by a triangulation beacon, is in latitude 23° 19′ 48″, longitude 35° 10′ 40″, and 654 metres above sea-level. It is drained by the Wadi Um Tenedba, a tributary of Wadi Hodein. The ascent of the hill is conveniently made in about an hour from a camp in one of the heads of Wadi Um Tenedba, about 1,200 metres south-east of the beacon and 320 metres above sea-level.
Gebel Harhagit is an isolated granite boss rising among schists ten kilometres south-south-east from Gebel Um Tenedba and five kilometres north of the Wadi Hodein. The beacon on its summit is in latitude 23° 14′ 35″, longitude 35° 12′ 52″, at an altitude of 542 metres above sea-level, or 326 metres above the wadi encircling its base. From its isolated character Gebel Harhagit is a conspicuous landmark for considerable distances round the Wadi Hodein.
Gebel el Anbat is conveniently considered here, though it lies on the south side of the Wadi Hodein. It presents a somewhat similar appearance to Gebel Harhagit, from which it lies nineteen kilometres south-east, and like it bears a beacon on its summit. The position of the beacon is latitude 23° 6′ 5″, longitude 35° 19′ 27″. El Anbat is lower than Harhagit, being only 390 metres above sea-level; it consists also of a different rock, being chiefly composed of curious brown and reddish calcareous schists. Gebel el Anbat is practically in the Wadi Hodein, the main channel of which is deviated by its foot-hills so as to pass round the east side of the hill. It is best ascended from the south, where a camp can be fixed about 600 metres south of the beacon and about 255 metres below it; the ascent is easy and occupies less than an hour.
Eastward of Gebel Abu Dahr there extends for some thirty kilometres along the south side of Wadi Khoda a mountainous tract of dark rocks, the principal masses of which, from west to east, bear the names of Gebel Hindia, Gebel Um Akra, and Gebel Um Etli. These mountains have only been seen from a distance, and little is known about them beyond the positions and altitudes of their principal peaks, which have been fixed by triangulation. Gebel Hindia, thirteen kilometres east of Abu Dahr, rises to 873 metres above sea-level, and is drained partly by the Wadi Hindia to the north, and partly by the Wadi Salib el Azrak. Gebel Um Akra, six kilometres further east, is higher, its highest peak, marked by a beacon, being 1,050 metres above the sea, while a ridge a little further south reaches 970 metres; it is drained to Wadi Khoda by the Wadi Um Akra. Gebel Um Etli, which forms the south side of the Wadi Khoda just before that wadi emerges on to the coast-plain, has three main summits, reaching respectively to 844, 795, and 764 metres above the sea. It is a rather extensive mass, drained on the north by the Wadis Buluk and Um Lassaf, tributaries of Wadi Khoda, and on the south by the Wadi Um Etli, which reaches the sea independently.