OSM tag name=Olmarch matches station Olmarch Halt in these Wikidata fields:
| Disused railway stations in Ceredigion | railway=tram_stop, railway=station, site=railway, disused=station, site=station, public_transport=stop_area, type=site, building=train_station, railway=disused_station, site=railway_station, railway=halt, railway=historic_station, railway=facility, public_transport=station |
| Former Great Western Railway stations | building=train_station, railway=tram_stop, railway=station, site=railway_station, site=railway, railway=historic_station, railway=halt, site=station, public_transport=stop_area, railway=facility, public_transport=station, type=site |
| Railway stations in Great Britain closed in 1965 | building=train_station, railway=tram_stop, railway=station, site=railway_station, site=railway, railway=historic_station, railway=halt, site=station, public_transport=stop_area, railway=facility, public_transport=station, type=site |
| Railway stations in Great Britain opened in 1929 | building=train_station, railway=tram_stop, railway=station, site=railway_station, site=railway, railway=historic_station, railway=halt, site=station, public_transport=stop_area, railway=facility, public_transport=station, type=site |