Strange Rock Formation on the Isle of Eriska

The Isle of Eriska sits on the edge of The Great Glen, the 100 kilometer valley that virtually cuts through Scotland from Fort William on the west coast to Inverness in the northeast. One of the world's great rift valleys, it was created by powerful forces more than 600 million years ago. The evidence is in the rocks - mostly schist and slate - like this one on the island's south shore.