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| Muckle Skerry, Graemsay, Brough of Birsay, Noup Head Lighthouse, Burroughston Broch|Helliar Holm Wikipedia
Helliar Holm is an uninhabited island off the coast of Shapinsay in the Orkney Islands, Scotland. It is home to a 42-foot-tall (13 m) lighthouse, which was built in 1893 and automated in 1967. It is a tidal island that used to be connected to Shapinsay. It is still possible to walk across from the mainland during very low tides.
The island also has the ruins of a broch, cairn and chapel.
In the Orkneyinga Saga it is referred to as both "Hellisey" and "Eller Holm" and John of Fordun refers to it as "Helene-holm"