Here's the inspiration:
History
Uncover the origins of the the Knocknagael Boar Stone, a remarkable early Pictish carving.
www.historicenvironment.scot
Knocknagael, Boar Stone | Canmore
Scotland's carved Pictish stones re-imagined in colour
Did an ancient people paint their ornately carved standing stones in vivid colours?
www.bbc.com