The border between Afghanistan and China is a boundary, beginning at the tripoint of both countries with Pakistan administrated region of Kashmir (Gilgit-Baltistan), following the watershed along the Mustagh Range, and ending at the tripoint with Tajikistan. This short border is in the far northeast of Afghanistan, distant from much of the country or urban areas, at the end of the Wakhan Corridor. The Chinese side of the border is located in the Chalachigu Valley. Both sides of the border are nature reserves: Wakhan Corridor Nature Refuge in Wakhan District, Badakhshan Province on the Afghan side and Taxkorgan Nature Reserve in Taxkorgan Tajik Autonomous County, Kashgar Prefecture, Xinjiang Uygur Autonomous Region on the Chinese side. The border is crossed by several mountain passes including Wakhjir Pass in the south and Tegermansu Pass in the north.