The Kokcha river traverses Badakshan from south-east to north-west, and, with the Kunduz, drains all the northern slopes.
From the Oxus (loon ft.) to Faizabad (4000 ft.) and Zebak (850o ft.) the course of the Kokcha offers a high road across Badakshan;, between Zebak and Ishkashim, at the Oxus bend, there is but an insignificant pass of 9500 ft.; and from Ishkashim by the Panja, through the Pamirs, is the continuation of what must once have been a much-traversed trade route connecting Afghan Turkestan with Kashgar and China.
The western slopes of this range drain to the Oxus either north-westwards, by the Kokcha and the Ragh, or else they twist their streams into the Shiwa, which runs due north across Darwaz.
The Kokcha and the Khanabad (or Kunduz) are the two great rivers of Badakshan.
The valley of the Kokcha leads directly from the Oxus to Faizabad, the capital of Badakshan, and its head is close above Ishkashim at the southern elbow of the great Oxus bend, a low pass of only 95 00 ft.