Shows that locations of varying elevation are not coplanar with respect to the circle of latitude.
<a href="//commons.wikimedia.org/wiki/User:SharkD" class="mw-redirect" title="User:SharkD">SharkD</a>
<span class="int-own-work" lang="en">Own work</span>. <a rel="nofollow" class="external text" href="https://github.com/mjhorvath/mike_illustrations">Download source code</a>.