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The Channel Tunnel (French: Tunnel sous la Manche), sometimes referred to by the portmanteau Chunnel, [3] [4] is a 50.46 km (31.35-mile) undersea railway tunnel, opened in 1994, that connects Folkestone (Kent, England) with Coquelles (Pas-de-Calais, France) beneath the English Channel at the Strait of Dover.
The biggest and the first underwater river railway tunnel in India. It is a metro railway tunnel connecting Kolkata to Howrah. [11] [12] 0.520 km: 30 m: 2021 Bangabandhu Sheikh Mujibur Rahman Tunnel: Chittagong, Bangladesh: First under-river road tunnel in South Asia: 3.32 km: 18 - 31 m: 2019–2022 Hvalfjörður Tunnel: Capital Region, Iceland
Left tube: 13654 meters, right tube: 13570 meters Railway Single Tube North Tianshan Tunnel: Xinjiang, China 13,610 m (8.457 mi) 2009 Railway Marmaray: Istanbul, Turkey 13,600 m (8.451 mi) 2013 Built next to a fault zone, between two continents Railway Single Track Savio Rail Tunnel: Helsinki – Kerava, Finland 13,575 m (8.435 mi) 2008 Metro
About 1,000 vehicles a day navigate the approximately six-and-a-half-mile stretch that at its nadir is 508 feet (155 meters) below the North Atlantic.
At around 600 miles wide and up to 6,000 meters (nearly four miles) deep, the Drake is objectively a vast body of water. To us, that is. ... very rough seas — more than 20 meter (66 feet) swells ...
The Eurotunnel Folkestone Terminal is a railway terminal built for the transport of road-going vehicles on specially constructed trains through the Channel Tunnel. The station is located in Cheriton , a northern suburb of the town of Folkestone in the county of Kent .
Comment comparing Elon Musk tunnel to Eurotunnel, noting faster speed than airplanes. Comment on high-speed travel from London to New York, mentioning train speed of 3000mph and its challenges.
A separate channel had to be dug below the east half of the tunnel to carry the water itself. It increases in depth over the course of the tunnel, from 4 metres (13 ft) m deep at the north end to 8.5 metres (28 ft) at the southern end. Vertical shafts link this channel to the main tunnel roughly every ten metres.