Perched above the dramatic South Ronaldsay cliffs, the Isbister Chambered Cairn - better known today as the 'Tomb of the Eagles' - is one of Orkney's top archaeological sites. Discovered by chance by local farmer Ronnie Simison in the 1950s, the Stone Age tomb revealed an amazing collection of bones and artefacts, placed here some 5,000 years ago. Today, a modern roof covers the original remains of the cairn.