Dark Places

Caban, Dinorwic Quarry · Fron-boeth Quarry Tunnel, Cwm Croesor · Llanberis Bomb Store · Moel Faban Quarry · Dinas Railway Tunnel, Tregarth · Braich Tunnel, Dinorwic Quarry

‘Dark Places’ on YouTube

Blaen-y-nant Molybdenum Mine
Braichmelyn
Coed y Dinas Copper Mine
Croesor Quarry
Cwm Ceunant Copper Mine
Dinorwic Quarry
Dorothea Quarry
Fron-boeth Quarry
Glyn Rhonwy Isaf Quarry
Caseg Valley
Moel Faban Quarry

Rhosydd Quarry
Tan-y-garth Arsenic Mine
Dinas Tunnel, Tregarth
Dolbadarn Castle
Roughcastle Tunnel, Falkirk
Llanberis Bomb Store
Llanddulas Jetty
Penrhyn Quarry
ROC Llangefni
Coast Artillery School, Great Orme

Tan-y-garth Rock Cannon

Edge of the rock cannon boulder, looking towards Gyrn

Date

18 June 2011
Location

Tan-y-garth, Bethesda

SH 63794 66815; 53.18094°N, 4.03963°W

Information

46-hole rock cannon at Tan-y-garth near Bethesda at the foot of the Carneddau mountains. This rock cannon is very close to the arsenic mine that dates back to the late 18th century.

Reference: Griff R. Jones, The Rock Cannon of Gwynedd, 2002 (ISBN 0953369218)

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Tan-y-garth Arsenic Mine

Tan-y-garth Arsenic Mine

Date

18 June 2011
Location

Tan-y-garth, Bethesda

SH 64007 66897; 53.18172°N, 4.03647°W

Information

The remains of these workings, which date back to the late 18th century, can be seen in a line following the 320 m contour around the lower slopes of Y Garth at the foot of the Carneddau mountains. This line stretches for some 160 metres and runs NNE from SH 63932 66751 to SH 64007 66897. There are several entrances, all of which are flooded.

David Bick (2003) provides the following information about this site:

In 1783 a Mr. Barker investigated various locations on the Penrhyn Estate, amongst which copper and arsenical-pyrites or mispickel were discovered above Tanygarth. The site yielded 232 tons of the latter mineral at a much later date, all of which was humped down the mountain by hand.

David Bick, The Old Copper Mines of Snowdonia, 3rd Edition, 2003, Landmark Publishing (ISBN 1843060752), p. 118.

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