Underwater Rail Tunnels

Thames Tunnel (London)

[{"selector":"#anim-5c43a32f-4266-4559-9cc5-6d761b160888","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-43ed581a-b97e-4a32-8366-c4040dcba270","keyframes":{"transform":["translate3d(152.00000%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7eb8140f-d1ba-4204-b3a0-db62b038cf30","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ed984aa6-375e-442a-a559-734b7102d554","keyframes":{"transform":["translate3d(-116.72026%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e77ab889-79a0-4cb3-90dc-5d24c98ebcc9","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-03edb03e-67af-4481-89a6-59ce55ee3c99","keyframes":{"transform":["translate3d(199.99997%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a62a1438-1ba3-4304-bce1-59cb0fbd6256 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-55.27508557008613%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Scribbled Underline

Seikan Tunnel (Japan)

[{"selector":"#anim-552b6870-f759-44fb-9c2f-37fed0369037 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-31.120473490374113%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-d54fe579-f230-4b2e-a00c-5b6c7cd7bcc3","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cda34172-0715-4d96-b6cf-2ecaba02331a","keyframes":{"transform":["translate3d(-159.89306%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e98f7991-5f01-4fdf-87d5-82f855c3bfb5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e34efc1a-b12a-4e43-9366-be3796234182","keyframes":{"transform":["translate3d(115.75562%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-99c34f35-1c23-4210-aacb-484629b3f22a","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4d0dfcbb-1e06-4fbc-ab27-49196b918016","keyframes":{"transform":["translate3d(-200.72993%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Scribbled Underline

Channel Tunnel (France)

[{"selector":"#anim-51ae747c-928b-43a7-bb41-207b8afbb4e3 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(54.09994744209504%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-75ed4cd1-db09-4371-96f5-58a4789c9e69","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-766364e3-583e-49c1-8b68-a895036178cd","keyframes":{"transform":["translate3d(0px, 390.02534%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-798b0a98-e7b5-4b12-b475-91791118b96d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f1cb422e-88f6-45c5-b424-1c8a3d0eb2af","keyframes":{"transform":["translate3d(0px, -379.33832%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c99055e7-7dad-4208-958d-c874b554338b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bb0eea46-5185-4cae-9f8a-db096aaf157d","keyframes":{"transform":["translate3d(0px, 3065.27385%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Scribbled Underline

Gotthard Tunnel (Switzerland)

[{"selector":"#anim-a825e538-a3ab-4bb3-aaf4-2d109911533b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(43.31154391521981%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-163fa953-3dc5-482f-88d5-400f46eec5a5","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b111fd9a-ccbb-4fba-81f9-aeae42a3e6e6","keyframes":{"transform":["translate3d(0px, -637.75264%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e6ee50a3-3de6-4063-a805-a853f23c0e69","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9cee9d58-50cc-4f90-b1c3-f110baef843c","keyframes":{"transform":["translate3d(0px, 155.55555%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-517ced35-96d4-4aa1-ae98-fcd70b32f948","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ac008f96-da9f-423f-9118-6666e65df89d","keyframes":{"transform":["translate3d(0px, -7152.76864%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Scribbled Underline

Marmaray Tunnel (Turkey)

[{"selector":"#anim-1879e2c0-86cd-4a8b-a214-bfbc69c4f6c1 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(33.233900683871205%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-8e1b5d5c-6d61-4c77-b78a-57627a4babb5","keyframes":{"opacity":[1,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-16685f7d-457a-4013-87c6-abcdcde440ec","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-b6188584-0128-435e-9465-730f70a096c1","keyframes":{"opacity":[1,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-b98ea4d6-4e1e-4f77-9a40-83de09956be9","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-62a20ef5-cf32-43e8-bc43-08e7c1826bdd","keyframes":{"opacity":[1,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-63041e0c-e421-4669-9e90-5433440d3ef4","keyframes":{"transform":["scale(3)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Scribbled Underline

Transbay Cube (USA)

[{"selector":"#anim-5d8c7d30-7ab2-4603-a67b-f9b25be5ed06","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-36cf6ce2-1080-44af-911b-af8fd2d9d5b0","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-2d4a595f-5b81-4f8e-909a-ecfd6e459f91","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-2e6b0eac-3733-427f-8048-8da7e3c5bffd","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-6e70ac8b-bbcc-4f30-9550-3203900b6f56","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-18a218cf-8edf-4e9a-bdee-bddb7ece5dfe","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] Scribbled Underline

Guadarrama Tunnel (Spain)

[{"selector":"#anim-b46e7d5f-c07e-49d7-a985-8d6863e52a4a","keyframes":[{"offset":0,"transform":"translate3d(0, -590.02534%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -165.915125608%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -56.406422504000005%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -21.181909706000003%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -9.204395304%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":0,"duration":600,"fill":"both"}] [{"selector":"#anim-1d1a8822-3d77-4e9d-9f04-02b5408b33ed","keyframes":[{"offset":0,"transform":"translate3d(0, -475.50853%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -133.712998636%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -45.458615468000005%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -17.070756227%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -7.417933068%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":0,"duration":600,"fill":"both"}] [{"selector":"#anim-1574f469-dd6f-412d-b792-a182e6928b07","keyframes":[{"offset":0,"transform":"translate3d(0, -6665.26999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.29,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.45,"transform":"translate3d(0, -1874.273921188%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.61,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.71,"transform":"translate3d(0, -637.1998110440001%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.8,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.85,"transform":"translate3d(0, -239.283192641%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":0.92,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"},{"offset":0.96,"transform":"translate3d(0, -103.97821184399999%, 0)","easing":"cubic-bezier(.5, 0, 1, 1)"},{"offset":1,"transform":"translate3d(0, 0%, 0)","easing":"cubic-bezier(0, 0, .5, 1)"}],"delay":0,"duration":600,"fill":"both"}] Scribbled Underline

Sydney Harbour (Australia)

[{"selector":"#anim-671303f3-c3cc-45dd-afc4-05a3d478561f","keyframes":{"transform":["scale(1)","scale(1.5)","scale(0.95)","scale(1)"],"offset":[0,0.33,0.66,1]},"delay":0,"duration":1450,"easing":"ease-in-out","fill":"both","iterations":1}] [{"selector":"#anim-4faaef1a-5f57-4a9e-96e4-01bcd7daed7e","keyframes":{"transform":["scale(1)","scale(1.5)","scale(0.95)","scale(1)"],"offset":[0,0.33,0.66,1]},"delay":0,"duration":1450,"easing":"ease-in-out","fill":"both","iterations":1}] [{"selector":"#anim-32351c40-ac4c-44e9-b79e-c9ba8216d77f","keyframes":{"transform":["scale(1)","scale(1.5)","scale(0.95)","scale(1)"],"offset":[0,0.33,0.66,1]},"delay":0,"duration":1450,"easing":"ease-in-out","fill":"both","iterations":1}] [{"selector":"#anim-26bb7051-d74e-42bb-965c-0d6cf0c235c6 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(54.026419512498045%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] Scribbled Underline

Helsinki- Talin Tunnel (Estonia & Finland)

[{"selector":"#anim-b856d68f-851c-4180-a3f3-7cf432677984 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(-50.65553609948853%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-a8bdef39-ca5f-4cf4-8c83-8a79c82d92e9","keyframes":{"transform":["translate3d(123.13168%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6c14180f-c487-4bcd-91c2-c20b2dee6a5e","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1644abfa-6507-47fc-a214-2b3eb995b278","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] [{"selector":"#anim-9729b8e3-765e-4f8c-bde1-520aa986a1b7","keyframes":{"transform":["translate3d(-116.39871%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-36527824-dbb3-486a-8f72-683db47592d9","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b1642ca1-79ea-4bd8-ae28-707761d71956","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] [{"selector":"#anim-876ae8e8-f6e3-409c-a0fe-5b413d056a60","keyframes":{"transform":["translate3d(199.99997%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-702547b0-2041-4f75-b94d-478a096a68a7","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6645e34c-49f3-48cb-8e6c-86a6330eacda","keyframes":{"transform":["scale(0.15)","scale(1)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"forwards"}] Scribbled Underline

Underwater Rail Tunnels

Top 9

of the world

Thames Tunnel (London)

It is the oldest of its kind built as a tourist attraction, later converted to link goods and passengers in 1869

Seikan Tunnel (Japan)

A dual gauge tunnel under the seabed of Tsugaru strait, it is the world’s longest undersea tunnel and the second deepest

Channel Tunnel (France)

It was opened in 1994 as the third longest railway tunnel, with a train speed of 160 km carrying Eurostar and LeShuttle services

Gotthard Tunnel (Switzerland)

Opened in 2016, it passes through the Alps and the first-flat, low-level route

Marmaray Tunnel (Turkey)

This 13.5 km long tunnel runs through Istanbul, and has the deepest immersed tube tunnel in the world

Transbay Cube (USA)

It connects San Francisco and Oakland with twin-bored tunnels in 1974

Guadarrama Tunnel (Spain)

It crosses Sierra de Guadarrama, forming a key position of Madrid-Asturas high-speed rail line

Sydney Harbour (Australia)

It is an undersea metro railway tunnel to be opened in 2024, by removing huge amount of sandstone, clay and marine sediments

Helsinki- Talin Tunnel (Estonia & Finland)

It would span Gulf of Finland and connect Finnish and Estonian capitals by 2030

Other stories

Know everything about Majuli masks that received GI...

View All

How underwater tunnels are built?