The corridor is higher in the east than in the west; (the Wakhjir Pass is in elevation) and descends to about at Ishkashim. The Wakhjir River emerges from an ice cave on the Afghan side of the Wakhjir Pass and flows west, joining the Bozai Darya near the village of Bozai Gumbaz to form the Wakhan River. The Wakhan River then joins the Pamir River near Kala-i-Panj to form the Panj River, which then flows out of the Wakhan Corridor at Ishkashim.