Lachulung La, or Lāchālūng La or Lungalacha La, is a paved motorable mountain pass in Ladakh in India just north of border with Himachal Pradesh. It is located on the NH3 Leh–Manali Highway, 54 km (34 mi) north of Sarchu and 24 km (15 mi) west of Pang. Rail-cum-road tunnel is being constructed under this pass to cater for the traffic for existing NH3 & under-construction Bhanupli–Leh line, Bara-lacha la and Taglang La are other tunnels being constructed on this route.