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
Eagle Island lighthouses 31 March 1988 the lighthouse was made automatic and there have been no lighthouse keepers resident on the island since. Eagle Island lighthouses The Eagle Island lighthouses were a pair of lighthouses on Eagle Island, County Mayo, Ireland. of which only one remains. Two lighthouses were commissioned in 1830 in response to requests from the Coastguards who were concerned at the sea conditions at Blackrock, further south. The Board inspector however, ruled in favour of locating the new lighthouses on Eagle Island, one in the east and the other in the west with between them at a cost of almost