Jizil was a deep gorge some two hundred yards in width, full of tamarisk sprouting from the bed of drifted sand, as well as from the soft twenty-foot banks, heaped up wherever an eddy in flood or wind had laid the heavier dust under the returns of cliffs. The walls each side were of regular bands of sandstone, streaked red in many shades. The union of dark cliffs, pink floors, and pale green shrubbery was beautiful to eyes sated with months of sunlight and sooty shadow. When evening came, the declining sun crimsoned one side of the valley with its glow, leaving the other in purple gloom.