Tar Tunnel tour The Tar Tunnel is part of the Ironbridge Gorge Museum Trust and is a must see attraction when in the Coalbrookdale area; the Tar Tunnel was originally planned as an underground narrow-gauge railway to transport rocks between the Coalport Canal and the River Severn without going across uneven roads; while the tunnel was being mined out in 1787, a natural bitumen stream was tapped into; this was used to waterproof ropes and 'caulk' ships along with being marketed as 'Betton's British Oil'; a health remedy! |
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