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
Dall Island island houses many logging camps. Columbia Helicopters of Oregon is one of the main companies using the island for its timber. Dall Island Dall Island is an island in the Alexander Archipelago off the southeast coast of Alaska, just west of Prince of Wales Island and north of Canadian waters. Its peak elevation is above sea level. Its land area is , making it the 28th largest island in the United States. Dall is used economically for fishing and limestone quarrying. The 2000 census recorded 20 persons living on the island. Alaska Natives are known to have inhabited coastal caves