North Stack North Stack North Stack (Welsh: Ynys Arw, meaning "rugged island") is a small island situated just off Holy Island on the north-west coast of Anglesey. North Stack can also refer to the headland opposite the island. This is the site of a redundant fog warning station, comprising a number of buildings, including the Trinity House Magazine, built in 1861, where shells for the warning cannon were stored. These buildings now house a bird watching observatory, giving a view of South Stack lighthouse across Gogarth Bay, and the studio of artist Philippa Jacobs. The Precambrian quartzite cliffs of this headland, including
Lighthouses on the Isle of Arran since. The light Fl(2)20s38m25M. Lighthouses on the Isle of Arran Three lighthouses can be found around the shores of the island of Arran in the Firth of Clyde. One is located on the Isle of Pladda in the South and the other two can be found on Holy Isle in Lamlash Bay to the East of Arran. All three are still in service and maintained by the Northern Lighthouse Board. They are now fully automatic since the electrification of both lighthouses on Holy Isle in 1977. Until up to the appointment of the Commissioners of the Northern Lighthouses (later Northern