The head of Wadi Khoda is formed by the union of three wadis, coming approximately from the north, west, and south, in the form of a cross. The central one of these, =Wadi Abu Debebi lil Khoda=, heads in a very easy pass leading to Bir Betan and the old mines of Um Eleiga. The one to the north, =Wadi Salib el Abiad=, is said to lead into Wadi Khiua, and to possess some old mines, but has not been explored. The remaining one of the three, =Wadi Salib el Azrak=, drains the east face of Gebel Abu Dahr and the high hills east of it; the feeder of it from Abu Dahr, called =Wadi Um Karaba=, leads by an easy pass, just north of the mountain, to Bir Betan and the Um Eleiga mines, while some eight kilometres from its junction with Khoda a track leads up a gully south-westward over another easy pass to Bir Rahaba. The names Salib el Abiad and Salib el Azrak refer to the form of the wadis and the nature of their floor, _salib_ meaning “cross,” while _abiad_ and _azrak_ refer to the prevailing white and dark colours of the sand in the respective arms of the cross; these colours are due to the wadis draining light-coloured granites and dark-coloured serpentines and schists respectively. A little below the union of the three arms above-mentioned, Wadi Khoda expands into a small rather stony plain, where the sinuous =Wadi Allawi=[93] enters from the north. This important feeder, which drains the eastern face of Gebel Dahanib, is mostly shut in by high hills, and is relatively well wooded; if it be followed up for about ten kilometres, one comes to the tomb of Sheikh Farhan, near which meet many small feeders, one of them containing a small rock basin near its head. About eight kilometres below the point of entry of Wadi Allawi, Wadi Khoda receives two feeders from opposite sides; that from the north, =Wadi Um Tawil lil Khoda=, drains from Gebel Dahanib, while that from the south, =Wadi Hindia=, is a sandy rapidly-falling wadi draining Gebel Hindia.