Hällristningar i Norr, Nämforsen                                           

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Rockcarving circular figure spearhead oval

Error: cannot execute query3. select ST_X(st_centroid(st_union(hallbilder.the_geom))), ST_Y(st_centroid(st_union(hallbilder.the_geom))), st_area(st_union(hallbilder.the_geom)) as area , hallbilder.figur_id from hallbilder,ristningar where hallbilder.figur_id=ristningar.figur_id and ristningar."motiv"='ringfigur' and ristningar."typ"='spetsoval' group by hallbilder.figur_id;