<a href="https://en.wikipedia.org/wiki/Bilharz_(crater)" class="extiw" title="en:Bilharz (crater)">Bilharz</a>, on the moon.  Diagonal streak of dots is blemish on original.
James Stuby based on NASA image<br>
<p>Reprocessed <a href="https://en.wikipedia.org/wiki/Lunar_Orbiter_4" class="extiw" title="en:Lunar Orbiter 4">Lunar Orbiter 4</a> image cropped in Gimp.<br>The original image is in the public domain because it is a work of the U.S. Government (<a href="https://en.wikipedia.org/wiki/NASA" class="extiw" title="en:NASA">NASA</a>).<br></p>
<b>Immediate source</b>: Lunar and Planetary Institute, Lunar Orbiter Photo Gallery<br>Lunar Orbiter 4, image 053, h3 <a rel="nofollow" class="external autonumber" href="http://www.lpi.usra.edu/resources/lunarorbiter/images/print/4053_h3.jpg">[1]</a>