Map at <a href="https://en.wikipedia.org/wiki/Nishi-%C5%8Cyama_Station" class="extiw" title="w:Nishi-Ōyama Station">Nishi-Ōyama</a> indicating it as the southernmost station of <a href="https://en.wikipedia.org/wiki/Japan_Railways_Group" class="extiw" title="w:Japan Railways Group">JR Group</a>. The map also shows <a href="https://en.wikipedia.org/wiki/Okud%C5%8Dkai_Station" class="extiw" title="w:Okudōkai Station">Okudōkai</a>, <a href="https://en.wikipedia.org/wiki/Wakkanai_Station" class="extiw" title="w:Wakkanai Station">Wakkanai</a> and <a href="https://en.wikipedia.org/wiki/Higashi-Nemuro_Station" class="extiw" title="w:Higashi-Nemuro Station">Higashi-Nemuro</a> as the westernmost, northernmost and easternmost stations of JR Group, respectively.
<a href="//commons.wikimedia.org/wiki/User:%E3%81%9D%E3%82%89%E3%81%BF%E3%81%BF" title="User:そらみみ">そらみみ</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>