The name Cairn Sidhe (pronounced cairn-shee) signifies the fairies mound, and like many other Scottish hills with similar names, this one has a large cairn on the summit, dating from the Bronze Age. There was a long-standing custom for the shepherds and cattleherds to light a great bonfire here on Midsummer Eve, the purpose being ‘to exorcise evil spirits and ensure the safety of the flocks.’
This ancient pre-christian tradition continued until the 1920s or 30s, where it lapsed into memory.