Khardung La or Khardung Pass is a mountain pass in the Leh district of the Indian union territory of Ladakh. The pass is on the Ladakh Range, north of Leh, and connects the Indus river valley and the Shyok river valley. It also forms the gateway to the Nubra Valley, beyond which lies the Siachen Glacier. A motorable road through the pass was built in 1976, and opened to public motor vehicles in 1988.