DescriptionShortened from Wild Horse Plains to Horse Plains to simply Plains, this community was established in 1883 as a Northern Pacific Railroad station. British and American trappers used the area as a wintering site for horses as early as 1800. Other Name(s)Wild Horse PlainsHorse PlainsContributing InstitutionMontana Historical Society Library and ArchivesGeolocation[1] Elevation2478 ft. CountySanders County