<https://www.theguardian.com/science/2016/sep/17/rock-art-amateur-archaeologist-scotland>
<http://schema.org/datePublished>
"2016-09-17T20:37:55.000Z"^^<http://schema.org/Date>
<https://www.theguardian.com/science/2016/sep/17/rock-art-amateur-archaeologist-scotland>