The uninhabited island of Boreray is part of the St.

Kilda Archipelago and home to the endangered Boreray sheep. The sheep on Boreray roam feely over the island and it's sea cliffs and have never been counted accurately.
During the summer months when St. Kilda was occupied men would be rowed across and left on the island for several weeks to hunt for sea birds and collect wool. In case of an emergency, or when they wanted to return they would turn over large patches of turf to signal to St. Kilda that the boats should come for them. File 6615