National Highway 3, or NH 3, is a national highway in India. It starts from Atari adjacent to India-Pakistan border and near Amritsar and terminates at Leh in Ladakh, via Manali in Himachal Pradesh.

Bara-lacha la also known as Bara-lacha Pass, or Bārā Lācha La, is a high mountain pass in the Zanskar range of Northern-India, connecting Lahaul district in Himachal Pradesh to Leh district in Ladakh. Rail-cum-road tunnels are being constructed under the Bara-lacha la, at 4,750 metres (15,580 ft) high Lungalacha La and 5,184 metres (17,008 ft) high Taglang La to cater to the traffic on the existing NH3 Leh–Manali Highway and the under-construction Bhanupli–Leh line.