"archaeological_site"=>"burial","source:name"=>"https://www.mapillary.com/app/?pKey=244565007442845&focus=photo"
"archaeological_site"=>"megalith","megalith_type"=>"dolmen","ref"=>"D49","wikidata"=>"Q1180223"
"archaeological_site"=>"megalith","megalith_type"=>"dolmen","ref"=>"D50","wikidata"=>"Q1830090"
"archaeological_site"=>"megalith","megalith_type"=>"dolmen","ref"=>"D51","wikidata"=>"Q1881264"