Does the London Underground go under water?

The section of underground railway between Wapping and New Cross has been open for public traffic since 7 December 1869, but the tunnel's existence goes back decades earlier. In 1825, French engineer Marc Brunel started work on the Thames Tunnel, the very first underwater tunnel anywhere in the world.



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London Underground is longer than the Paris Metro at 250 miles, compared to the parisians 133 miles.

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Redbridge is often described as the shallowest deep level (as opposed to cut-and-cover) station on the network, as it is only 5.2 metres (17 ft) beneath the surface.

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The Greenwich Foot Tunnel is an underground walkway that allows you to walk from Greenwich to the Isle of Dogs in London. The reason why this tunnel is so special is that it allows you to walk under the River Thames which is the main river that snakes through the city.

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While you can't walk through the Thames Tunnel, you can head underground into our spectacular Grade II* listed Tunnel Shaft which once served as the Grand Entrance Hall for Victorian visitors.

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If you're anywhere near as obsessed with subterranean London as we are, you'll be bursting with excitement at the prospect of exploring London's abandoned tube tunnels. These disused stations and platforms spend most of the year in peaceful quiet, but on certain days, tour groups are allowed in to get a look.

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Whatever direction you're coming from –whether via car, tube or walk – you'll know you're reaching King's Cross St Pancras when traffic will start slowing down and you'll even have to queue to cross the road. As such, seeing it top the chart as London's most stressful station is certainly not a surprise.

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He added: 'The Central line has the loudest section out of all of the tube lines, and it basically gets as loud as almost 110dB. ' The Jubilee, Central, Victoria and Bakerloo lines were also recorded to be louder than 105dB on ten different occasions.

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Hampstead is the deepest station below the surface, at 58.5 metres (192 ft), as its surface building is near the top of a hill, and the Jubilee line platforms at Westminster are the deepest platforms below sea level at 32 metres (105 ft).

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Smaller tunnels are cheaper to dig out then bigger tunnels. This was especially important over hundred years ago before modern tunneling techniques. The oldest tunnels in the London Underground is dug out by hand and even increasing the diameter by a feet means way higher labor cost.

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The mountain material is solid and strong enough not to collapse the hole, or the hole is lined with reinforcement that transfers load from one side to the other. This is now iron/steel rings or reinforced concrete. Tunnel boring machines build the liners as they progress, and push forward using the last ring.

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The Channel Tunnel (French: Tunnel sous la Manche), also known as the Chunnel, is a 50.46-kilometre (31.35 mi) underwater railway tunnel that connects Folkestone (Kent, England) with Coquelles (Pas-de-Calais, France) beneath the English Channel at the Strait of Dover.

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