Khardung La Pass or Khardungla Top enjoys the coveted distinction of being the World's Highest Motorable Pass, but that title may be disputed. Facts aside, the pass is indeed a feat of human endurance as it is located at an altitude of more than 18,000 ft. This pass is on the way from Leh to Nubra valley. The oxygen level at this altitude is quite low, so be prepared and do not stay here for more than 15-20 minutes. Permit is no longer required for Indians to visit Khardung La.