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Supporters of the tunnel campaign gather at the north portal on 15th August 2017, during filming for BBC Look North.

Credit: Four by Three

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Supporters of the tunnel campaign gather at the north portal on 15th August 2017, during filming for BBC Look North.

Credit: Four by Three

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Supporters of the tunnel campaign gather at the north portal on 15th August 2017, during filming for BBC Look North.

Credit: Four by Three

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Supporters of the tunnel campaign gather at the north portal on 15th August 2017, during filming for BBC Look North.

Credit: Four by Three

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Supporters of the tunnel campaign gather at the north portal on 15th August 2017, during filming for BBC Look North.

Credit: Four by Three

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A set of steel arches, used to provide additional support for the arch.

Credit: Four by Three

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One of two in-situ concrete arches, used to repair the partial collapses.

Credit: Four by Three

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A gong provided an audible warning of the Up Distant signal.

Credit: Four by Three

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Enough water probably pours down No.2 shaft to power an art installation.

Credit: Four by Three

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A view up No.3 shaft at the reinforced concrete frames.

Credit: Four by Three

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The lone track panel left by the salvage crews below No.4 shaft.

Credit: Four by Three

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The cycle path would enter the tunnel via a ramp.

Credit: Four by Three

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Another set of steel arches, this one incorporating a works platform.

Credit: Four by Three

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Part of the 3D model.

Credit: Four by Three

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Ten men lost their lives in appalling circumstances during the construction of Queensbury Tunnel

Credit: Four by Three

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A modern tunnel, driven and lined using a tunnel boring machine.

Credit: Four by Three

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Galdane Tunnel in Norway, one of many on the country's road network driven using 'drill and blast' techniques.

Credit: Simon Douglas

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89% of Queensbury Tunnel remains in 'fair' condition and can be repaired at modest cost using standard methodologies.

Credit: Forgotten Relics

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How the north portal will probably look if abandonment goes ahead.

Credit: Four by Three

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A view of the tunnel's southern entrance during construction.

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Looking up No.3 shaft at the reinforced concrete frames inserted in 1934/35.

Credit: Forgotten Relics

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Looking north from No.3 shaft.

Credit: Forgotten Relics

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Engineers exit the tunnel's south portal on 22nd June.

Credit: Four by Three

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One of two partial collapses in the tunnel's central section.

Credit: Four by Three

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A deluge of water descends No.2 shaft into the tunnel.

Credit: Forgotten Relics

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A lone railway track panel evaded the salvage team below No.4 shaft.

Credit: Forgotten Relics

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Mineral deposits on the sidewall at an area of water ingress.

Credit: Forgotten Relics

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Flooding in the tunnel starts about 1,000 yards from the south end.

Credit: Forgotten Relics

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Not much light at the end of the tunnel...currently.

Credit: Forgotten Relics

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Typical brickwork damage.

Credit: Forgotten Relics

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A bracket with insulated top that used to support a telegraph wire.

Credit: Forgotten Relics

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The south portal was usually under 30+ feet of water before s long-term pumping.operation was installed.

Credit: Forgotten Relics

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A view of the south portal after the water had been pumped out for inspection purposes.

Credit: Forgotten Relics

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A view of the south portal during the long-term dewatering operation in the autumn of 2015.

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Local Councillors, a Sustrans representative and campaigners greet Parliamentary Under Secretary of State for Transport Robert Goodwill at the tunnel's north portal on 23rd June 2014.

Credit: Four by Three

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Robert Goodwill, Parliamentary Under Secretary of State for Transport (second from left), discusses the tunnel's potential with Tom Jones (left) from Bradford Council.

Credit: Four by Three

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Parliamentary Under Secretary of State for Transport, Robert Goodwill, hears about the tunnel's history from Mark Neale, a local railway historian.

Credit: Four by Three

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Parliamentary Under Secretary of State for Transport, Robert Goodwill (left), discusses the prospects for a cycle way with Simon Cooke of Bradford Council, Mike Babbitt from Sustrans and Welcome to Yorkshire's Gary Verity.

Credit: Four by Three

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Campaigners gather at the north portal for a BBC Look North item about the proposed path.

Credit: Forgotten Relics

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One day maybe?

Credit: Forgotten Relics

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A group of young cyclists await the laying of a cycle path at the tunnel's north portal.

Credit: David Enyori

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Going places: a sign of the times.

Credit: Forgotten Relics

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A taste of things to come? A group of young cyclists emerge from the lit and tarmacked tunnel.

Credit: David Enyori

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The campaign aims to transform the tunnel from a liability into an asset.

Credit: Forgotten Relics

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Leicester City Council inserted concrete collars in Glenfield Tunnel to strengthen the lining.

Credit: Forgotten Relics

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Norah McWilliam, leader of the Queensbury Tunnel Society

Credit: Four by Three

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The first meeting of Q-CHAP, held at Holy Trinity Church, Queensbury, on 15th May 2014.

Credit: Four by Three

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The first meeting of Q-CHAP, held at Holy Trinity Church, Queensbury, on 15th May 2014.

Credit: Four by Three

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The ‘Tour de Queensbury’ Family Fun Rides along the Great Northern Railway Trail on 18th May 2014

Credit: Four by Three

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The ‘Tour de Queensbury’ Family Fun Rides along the Great Northern Railway Trail on 18th May 2014

Credit: Four by Three

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The ‘Tour de Queensbury’ Family Fun Rides along the Great Northern Railway Trail on 18th May 2014

Credit: Four by Three

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One of the lightworks that create a magical experience for users of Bath's Combe Down Tunnel.

Credit: Forgotten Relics

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Cyclists head south through Bath's mile-long Combe Down Tunnel.

Credit: Forgotten Relics

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Devonshire Tunnel in Bath with its curved alignment and stone sidewalls.

Credit: Forgotten Relics

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Earlsheaton Tunnel on the Ossett-Dewsbury Greenway in West Yorkshire.

Credit: Forgotten Relics

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Ashbourne Tunnel on the Tissington Trail in Derbyshire.

Credit: Forgotten Relics

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Headstone Tunnel on the Monsal Trail in Derbyshire.

Credit: Forgotten Relics

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Society logo on white.

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Society logo on black.

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'Q' thumbnail

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Campaign logo in the tunnel.