4 - Trearddur to Holyhead
Magazine Building / North Stack
The Trinity House Magazine (1861) , on North Stack headland , was once used to store the charges used in the two fog cannons.
From 1895 to 1986 - 35 electric powered 'Tannoy' fog sirens were used.
Ref: NW 782
Date: 29/04/2022
Location: SH 215 839
