4 - Trearddur to Holyhead
Holyhead Mountain Quarry
The Quarry supplied stone for the construction of Holyhead Breakwater between 1846 and 1873.
After the 2 mile long curved Breakwater was constructed, the Quarry became a Brickworks
Ref: NW 3537
Date: 20/08/2024
Location: SH 2240 8365
