Keskmine GPS koordinaadid postiindeks 356-831: 36.777, 126.55

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videod linnad:
>> Unsan-myeon/운산면 356-831, Chungcheongnam-do/충남, Seosan-si/서산시, Gajwari/가좌리, GPS koordinaadid: 36.77703,126.54999
>> Unsan-myeon/운산면 356-831, Chungcheongnam-do/충남, Seosan-si/서산시, Sangseongri/상성리, GPS koordinaadid: 36.77704,126.55
>> Unsan-myeon/운산면 356-831, Chungcheongnam-do/충남, Seosan-si/서산시, Sojungri/소중리, GPS koordinaadid: 36.77695,126.54991
>> Unsan-myeon/운산면 356-831, Chungcheongnam-do/충남, Seosan-si/서산시, Wonbeolli/원벌리, GPS koordinaadid: 36.77703,126.54999