4 - Trearddur to Holyhead
Gunpowder Magazine
An explosive store for the nearby Holyhead Breakwater Quarries.
The quarries supplied stone (7 million tons)
for the 1.5 mile (2.39km) Holyhead Breakwater , built 1846/1873.
After the Breakwater was constructed, the Quarry became a Brickworks (closed 1974)
It is now the site of the Holyhead Breakwater Country Park (1990).
Ref: NW 2085
Date: 02/05/2023
Location: SH 2215 8370
