New Delhi, Jan. 14 -- Penetrating through high altitude mountains in difficult terrains and connecting inaccessible areas, tunnels have been one of the main features in India's road infrastructure development programme.

Whether it is the landmark Atal Tunnel, the world's longest highway tunnel above 10,000 ft stretching 9.02 km bypassing Rohtang Pass, the upcoming mega-tunnel like Zojila that will provide all-weather access to Ladakh, or the record-breaking rail links led by the 12.77-km Tunnel T50, India's tunnel construction and infrastructure development are set to be among the most crucial contributors in India's development journey.

The upcoming Zojila tunnel will provide all-weather access to Ladakh, boosting mobility and Defence re...