<a href="https://en.wikipedia.org/wiki/K-171_(east)" class="extiw" title="w:K-171 (east)">K-171</a>, at about the halfway mark.
<a href="//commons.wikimedia.org/wiki/User:Scott5114" title="User:Scott5114">Scott5114</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>