The Prince of Wales Quarry is a disused open cast slate quarry in Trebarwith Valley on the outskirts of Tintagel in Cornwall, South West England.
The engine house was built in 1870 and is believed to have remained in operation until nearby Bowithick Quarry closed down in 1913.
The engine house was built to accommodate a 50" Woolf Compound beam engine which pumped the large pit below and hauled large blocks of slate from the depths of the quarry workings to the headframe where it was sorted ready for splitting.
[2] The engine also hauled trucks across bridges from Bowthick quarry on the other side of the valley.
[4] The quarry produced a bluish coloured slate from the Upper Devonian Penpethy Beds and was used predominantly for roofing.