=Gebel Dif= and =Gebel Anfeib= together form a still further continuation south-eastward of the same great sandstone plateau, being separated from Gebel Hodein by the deep winding gorge of Wadi Dif. The sandstone beds here dip to the north-east, and the highest points are near the west edge of the mass, where they are flanked by lines of lower hills, formed of schists cropping out from under the sandstone. A triangulation beacon in latitude 23° 8′ 24″, longitude 34° 59′ 19″, marks the south end of the high plateau of Gebel Anfeib; it is 705 metres above sea-level, and very conspicuous from the east, but it is generally invisible from the west side of the mass, owing to the ridges north-west of it being slightly higher. In occupying the point as a station, I approached it from Bir Dif, following up the Wadi Abu Hashim to its head, then down the Rod Mukrayib round Gebel Lilowit, the south tip of the schist range, and turning north across various small wadis to a camp in one of the heads of Wadi Edunqul, at 315 metres above sea-level and 1,200 metres south-east of the beacon. This camp could also have been reached from Bir Abu Saafa via the Wadis Hodein and Anfeib. The climb to the beacon, of 400 metres, is steep, but not difficult, and occupies less than two hours. =Gebel Tibatib= is a conspicuous dark conical peak among the low dark hills which extend from Gebel Anfeib to Wadi Hodein. Its summit is 396 metres above sea-level. =Gebel Butitelib= is a steep-sided little hill mass of grey felsite close west of the easy pass which leads from the head of Wadi Abu Hashim into the Rod Mukrayib, near the south end of Gebel Anfeib. It rises to 485 metres above sea, or eighty metres above the sandy pass. =Gebel Lilowit=, the south end of the schist range which flanks Gebel Anfeib on the west, is 485 metres above the sea. =Gebel Niqrub el Tahtani= is a conspicuous isolated jagged mountain south of the Rod Mukrayib (which drains its northern face), and west of Wadi Madi. The beacon on it is in latitude 23° 0′ 39″, longitude 35° 0′ 53″, 829 metres above sea-level and about 500 metres above the Rod Mukrayib. A conspicuous pinnacle close north-east of the beacon has practically the same altitude.