Location | |
---|---|
Location in Gwynedd | |
Location | near Llanberis |
County | Carnarvonshire (now Gwynedd) |
Country | Wales, UK |
Coordinates | 53°07′25″N 4°08′53″W / 53.12361°N 4.14806°W SH 563 607 |
Production | |
Products | Slate |
Type | Quarry |
History | |
Opened | early 1700s |
Closed | 1930 |
The Glynrhonwy quarries (also known as the Glyn-Rhonwy quarries) were two adjacent quarries in the Glynrhonwy area, north-west of Llanberis, in Carnarvonshire (now Gwynedd), Wales.
They were:
The quarries operated internal railways of 2 ft (610 mm) gauge and were served by Glynrhonwy Siding off the LNWR's Caernarfon to Llanberis branch.[3][4]
Lower Glynrhonwy was acquired by the Air Ministry in 1939 for munitions storage. It occupied the site until 1961.[5] During the Second World War the site generated two extra trains per day on some occasions.[6] The railway siding was taken out of use on 18 December 1956.[7]
A 100 MW pumped storage project, marketed as a "quarry battery", received approval in 2017 and as at 2019 had reached the "detailed engineering design" stage.[8][9]