SH6742 : New Moelwyn Tunnel under construction

taken 42 years ago, near to Maentwrog, Gwynedd, Great Britain

New Moelwyn Tunnel under construction
New Moelwyn Tunnel under construction
The construction of the lower reservoir for the Tanygrisiau Hydro Electric Pump Storage scheme necessitated the construction of a new deviation line in order to re-open the Ffestiniog Railway through to Blaenau Ffestiniog. The old route used to pass through the Moelwyn tunnel, however the northern end of this was below the water level of the new reservoir and so was plugged, thus obstructing the line. The deviation route runs at a higher level but still requires a tunnel, albeit a somewhat shorter one. In this 1976 vintage picture the new 310 yard long tunnel is seen under construction. It had to be blasted through a granite spur of the Moelwyn mountain. Although most of the deviation was constructed entirely by volunteers the specialist tunnelling work was carried out by 3 Cornish tin mining engineers with a small team of employees.
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SH6742, 103 images   (more nearby )
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Date Taken
August 1976   (more nearby)
Monday, 1 January, 2007
Railway (under construction)   (more nearby)
Subject Location
OSGB36: geotagged! SH 679 426 [100m precision]
WGS84: 52:57.8666N 3:58.0967W
View Direction
NORTH (about 0 degrees)
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Image classification(about): Geograph
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