Zoji La Tunnel, an engineering marvel as first of its kind on such tough terrain, situated at an altitude of 11578 feet on Srinagar-Kargil-Leh highway, where temperatures fall to -45 degrees, will be India’s longest road tunnel and Asia's longest bi-directional underground road to be built almost 400 metres beneath the existing highway. Currently, Ladakh remains cut-off from the rest of India fr...