The highest sea stack in the British Isles, 196 metres (643 ft.) tall. Stac an Armin means stack of the soldier/warrior. A remarkable place where St Kildans used to climb up and down the cliffs "harvesting" birds". Remarkably, 3 men and 8 boys from St Kilda (Hirta) were marooned there from about 15 August 1727 until 13 May 1728. Hirta suffered a smallpox outbreak while the eleven were on the stack, few survived and the islanders were unable to man a boat and retrieve them until the next year when the factor's boat arrived on the annual run to collect his rent of birds, eggs etc.
