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
Moreton Island lighthouses from their original location due to coastal erosion. Of the five lighthouses, only Cape Moreton Light survived and is still active today. In 1825, Brisbane was established as a penal settlement. In spite of the hazards, the preferred access to Moreton Bay and Brisbane was through the southern entrance, between Moreton Island and North Stradbroke Island, mainly due to shorter shipping route and better shipping conditions. The southern entrance was therefore marked in 1825 and a pilot station was established at Amity Point on North Stradbroke Island in 1827. Although the northern entrance was considered in the 1830s, it was