<a href="https://en.wikipedia.org/wiki/Belz_(crater)" class="extiw" title="en:Belz (crater)">Belz (crater)</a>, on Mars.  This is a figure on p.75 of NASA SP-441: VIKING ORBITER VIEWS OF MARS, which has the following caption:
<a href="https://en.wikipedia.org/wiki/NASA" class="extiw" title="en:NASA">NASA</a>
published 1980
<p><a href="https://en.wikipedia.org/wiki/Viking_program" class="extiw" title="en:Viking program">Viking program</a> Orbiter mosaic.<br>The original image is in the public domain because it is a work of the U.S. Government (NASA).<br></p>
<b>Immediate source</b>: <a rel="nofollow" class="external text" href="http://history.nasa.gov/SP-441/contents.htm">NASA SP-441: VIKING ORBITER VIEWS OF MARS</a>, Viking Orbiter Imaging Team, 1980, <a rel="nofollow" class="external text" href="http://history.nasa.gov/SP-441/ch7.htm">chapter 7</a>