A petrosomatoglyph is a supposed image of parts of a human or animal body in rock. They occur all over the world, often functioning as an important form of symbolism, used in religious and secular ceremonies, such as the crowning of kings. Some are regarded as artefacts linked to saints or culture heroes.

Dunadd is a hillfort in Argyll and Bute, Scotland, dating from the Iron Age and early medieval period and is believed to be the capital of the ancient kingdom of Dál Riata. Dal Riata was a Gaelic kingdom spanning the northern Irish coast to Argyll and the Scottish islands in the early centuries AD, possibly after the Romans had abandoned Southern Britain and at the time when the Anglo Saxons were crossing the North Sea to counter incursions over Hadrian's Wall by the Picts and Dalriadan Scots.