The construction of the Atal Tunnel, which is the world`s longest highway tunnel above 10,000 feet connecting Manali with Leh, has been completed in a span of 10 years. However, the original estimated time for the construction of the tunnel was less than six years.
from Zee News :State https://ift.tt/3mqgReR
via
from Zee News :State https://ift.tt/3mqgReR
via