As can be seen from the picture, the carving of the diving bird is clear.

The hill to the left and the diving position of the bird may mean that the picture represents a crude drawing of the Stenness loch with the hills of Hoy in the background.

Despite the graffiti to the left, which declares it to be "Pictish marks" - when, and by whom, the bird was carved is not clear.

To the right of the picture are some deeply cut runes but again, the authenticity of these cannot be proven.

For more information on Norse runes, click here