Iwami is a county and its consensus geometry is derived from meso.
{"meso:gadm_admin":"Iwami","meso:gaul_admin":"Iwamityoo","geom:latitude":35.54476,"wof:name":"Iwami","counts:names_total":9,"statoids:as_of_date":"2000-10-01","mz:is_current":1,"name:lit_x_preferred":["Ivamis"],"wof:hierarchy":[{"continent_id":102191569,"country_id":85632429,"county_id":1108742683,"region_id":85672685}],"meso:source":"GSIJ","meso:name_alt":"Iwami","mz:min_zoom":6,"lbl:latitude":35.547446,"lbl:min_zoom":8,"meso:hasc_id":"JP.TT.IW","name:por_x_preferred":["Iwami"],"geom:area":0.012157,"label:eng_x_preferred_placetype":["town"],"counts:concordances_total":2,"geom:type":"Polygon","wof:lastmodified":1695886713,"meso:admin_1":"Tottori Ken","statoids:capital":"","wof:belongsto":[102191569,85632429,85672685],"meso:gadm_hasc2":"JP.TT.IW","mps:latitude":35.547446,"wof:repo":"whosonfirst-data-admin-jp","wof:shortcode":"IW","wof:country":"JP","counts:names_preferred":7,"geom:area_square_m":1.22310971208802E8,"counts:names_variant":2,"wof:breaches":[],"edtf:inception":"uuuu","statoids:type":"county","iso:country":"JP","statoids:area_km":"251","statoids:statoid":"JP.TT.IW","geom:bbox":"134.277298,35.471066,134.437195,35.614597","name:eng_x_preferred":["Iwami"],"src:lbl_centroid":"mapshaper","wof:superseded_by":[],"name:fra_x_preferred":["Iwami"],"name:nld_x_preferred":["Iwami"],"wof:geomhash":"6819950c49604e9dbbf10daa44d0065c","wof:placetype_id":102312313,"mz:is_ceased":0,"wof:created":1479151435,"label:eng_x_preferred_longname":["Iwami Cho"],"lbl:max_zoom":10,"src:population":"statoids","src:population_date":"2000-10-01","wof:placetype":"county","name:ita_x_preferred":["Iwami"],"meso:mps_y":35.547446,"statoids:name":"Iwami","meso:mps_x":134.367655,"statoids:population":"26086","mz:is_deprecated":0,"geom:longitude":134.362216,"wof:population":26086,"wof:id":1108742683,"statoids:timezone":"9","statoids:country":"JP","wof:concordances":{"hasc:id":"JP.TT.IW","meso:local_id":"31302"},"name:eng_x_variant":["Iwamityoo","Iwami Cho"],"src:geom":"meso","wof:tags":[],"wof:population_rank":7,"counts:names_languages":7,"meso:local_id":"31302","mps:longitude":134.367655,"meso:name_en":"Iwami Cho","statoids:hasc":"JP.TT","wof:supersedes":[1108745599],"lbl:longitude":134.367655,"wof:parent_id":85672685,"wof:placetype_names":["county"],"mz:hierarchy_label":1,"edtf:cessation":"uuuu","name:deu_x_preferred":["Iwami"]}