"ref"=>"D4","wikidata"=>"Q2151974","site_type"=>"megalith","megalith_type"=>"dolmen"
"ref"=>"D3","wikidata"=>"Q2309476","site_type"=>"megalith","megalith_type"=>"dolmen"
"ref"=>"G1","wikidata"=>"Q4514809","site_type"=>"megalith","megalith_type"=>"dolmen"