Rock Cannon, Pont-y-Pair, Betws-y-Coed

Pont-y-Pair Rock Cannon on the banks of the Afon LLugwy

Pont-y-Pair Rock Cannon on the banks of the Afon LLugwy


6 September 2014

Pont-y-Pair, Betws-y-Coed

SH 79122 56748; 53.09419°N, 3.80659°W


The rock cannon in Betws-y-Coed was drilled into the bedrock on the banks of the Afon Llugwy by the side of Pont-y-Pair (Bridge of the Cauldron). The 15th century bridge carries the B5106 Llanwrst road over the river. It was originally built for pack horses and later enlarged. It was also used for a time by coaches on the London to Holyhead route until Telford’s A5 road opened through the town.

Further Reading

Rock Cannon — history and method of operation; Other rock-cannon posts


Bore holes and connecting channels

Bore holes and connecting channels

Pont-y-Pair Rock Cannon

Pont-y-Pair Rock Cannon


7 thoughts on “Rock Cannon, Pont-y-Pair, Betws-y-Coed

  1. This is different from all the rock cannons I have seen so far…I wouldn’t have spotted it as such, although I will now! Been trying to get hold of GRJ’s book to no avail as I am told there is a cannon at Cwt-y-Bugail…haven’t found it yet 🙂 Lovely photos as always!

  2. If I may help Iain,If you approach Cwt y Bugail on the tramway spur,behind the ruined building on the left(the mill presumably)is a short incline.At the top are the two walls for the winding drum.Walk,I would guess,10 yards to the right and the boulder is flush with the grass.Only 11holes and no grooves.SH73304685.
    A few years ago Brousers in Port sourced a S/H copy of GRJ’s book for me-£21 though,and I notice has one for sale at £17.75.Good luck.
    John Morris

    • That is most kind of you John, thank you. I know exactly where you mean. I would have been looking somewhere else altogether! A short expedition will be organised as soon as possible 🙂

  3. Pingback: Pont-y-Pair Falls, Betws-y-Coed | GeoTopoi

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