Our path took up between the Sakhara and the Sukhur by a narrow gorge with sandy floor and steep bare walls. Its head was rough. We had to scramble up shelves of coarse-faced stone, and along a great fault in the hillside between two tilted red reefs of hard rock. The summit of the pass was a knife-edge, and from it we went down an encumbered gap, half-blocked by one fallen boulder which had been hammered over with the tribal marks of all the generations of men who had used this road. Afterwards there opened tree-grown spaces, collecting grounds in winter for the sheets of rain which poured off the glazed sides of the Sukhur. There were granite outcrops here and there, and a fine silver sand underfoot in the still damp water-channels. The drainage was towards Heiran.