Map of Nakayama Tunnel on the Joetsu Shinkansen, roads and rivers nearby
<a href="//commons.wikimedia.org/wiki/User:Kkairri" class="mw-redirect" title="User:Kkairri">Kkairri</a>
CC BY-SA 2.0
<span class="int-own-work" lang="en">Own work</span>