INDIAN GEOGRAPHY

Detailed explanation-1: -The Gotthard Base Tunnel, with a length of 57.09 km (35.5 mi) and a total of 151.84 km (94.3 mi) of tunnels, shafts and passages, is the longest railway tunnel in the world, with a geodetic distance of 55.782 km (34.7 mi) between the two portals.

Detailed explanation-2: -With its 57 km, the Gotthard base tunnel is the longest railway tunnel in the world, and the core of the new transalpine railway axis AlpTransit. The twin single track high speed rail tunnels run between Erstfeld and Bodio in Switzerland.

Detailed explanation-3: -LÆRDALSTUNNELEN-The world’s longest road tunnel is 24, 5 km long and situated between Aurland and Lærdal. The tunnel opened November 2000. Lighting is a central factor-every 6 km the area is widened and these rock chambers are fitted with special lighting. Safety equipment and monitoring are installed in the tunnel.

Detailed explanation-4: -The longest railway tunnel in the world is the Gotthard base tunnel. The Gotthard base tunnel is situated in Switzerland.

Detailed explanation-5: -The Gotthard Base Tunnel is the world’s longest and deepest tunnel. It runs under the Swiss alps between the towns of Erstfeld in the north and Bodio in the south. The tunnel is 57 km long and reaches a depth of 2, 300 meters.