Carving of a Viking ship on a slate, from Jarlshof, 800 – 1100 ADCarving of a Viking ship on a slate, from Jarlshof, 800 – 1100 AD © National Museums Scotland

Carving of a Viking ship on a slate, from Jarlshof, 800 – 1100 ADCarving of a Viking ship on a slate, from Jarlshof, 800 – 1100 AD © National Museums Scotland