The Callanish Stones on Lewis are among the most significant prehistoric monuments in Europe, erected around 2900 BC — roughly contemporary with Stonehenge. The site consists of a central circle of 13 stones with four avenues radiating outward in a cross shape, unlike any other megalithic arrangement anywhere. They stand up to 4 metres high, grey Lewis gneiss worn smooth by Atlantic weather over five thousand years.
Unlike Stonehenge, Callanish has no rope barriers. You can walk among the stones, touch them, and sit between them. On a clear morning, with the light coming off the water and no other visitors about, the effect is quietly extraordinary.