Marso is a locality and its consensus geometry is derived from geonames.
{"gn:population":0,"geom:latitude":57.65,"name:nor_x_variant":["Marsø"],"gn:name":"Marsö","wof:name":"Marso","counts:names_total":2,"gn:feature_code":"PPL","gn:feature_class":"P","mz:is_current":-1,"wof:hierarchy":[{"continent_id":102191581,"country_id":85633789,"county_id":1159303209,"localadmin_id":1159306131,"locality_id":1209804569,"region_id":85688401}],"gn:dem":-9999,"mz:min_zoom":12,"lbl:min_zoom":13.5,"geom:area":0,"gn:latitude":57.65,"gn:asciiname":"Marso","lbl:bbox":"16.68,57.63,16.72,57.67","counts:concordances_total":1,"gn:country_code":"SE","geom:type":"Point","wof:lastmodified":1566641550,"gn:admin1_code":"9.0","wof:belongsto":[85688401,102191581,1159306131,85633789,1159303209],"wof:repo":"whosonfirst-data-admin-se","wof:country":"SE","counts:names_preferred":1,"geom:area_square_m":0,"counts:names_variant":1,"wof:breaches":[],"edtf:inception":"uuuu","iso:country":"SE","geom:bbox":"16.7,57.65,16.7,57.65","wof:superseded_by":[],"wof:geomhash":"d23fb3fc6deee402e558a82d9c81f5d9","wof:placetype_id":102312317,"mz:is_ceased":0,"lbl:max_zoom":18,"wof:placetype":"locality","gn:longitude":16.7,"name:nor_x_preferred":["Marsö"],"mz:is_deprecated":0,"gn:modification_date":"2012-01-17","geom:longitude":16.7,"wof:id":1209804569,"wof:concordances":{"gn:id":2692483},"src:geom":"geonames","gn:geonameid":2692483,"wof:tags":[],"counts:names_languages":1,"wof:supersedes":[],"wof:parent_id":1159306131,"wof:placetype_names":["locality"],"mz:hierarchy_label":1,"gn:timezone":"Europe/Stockholm","edtf:cessation":"uuuu"}