Crater Ksa on Titan. Radar image, made by «<a href="https://en.wikipedia.org/wiki/Cassini%E2%80%93Huygens" class="extiw" title="en:Cassini–Huygens">Cassini</a>» 7 September 2006
NASA
<a rel="nofollow" class="external free" href="http://photojournal.jpl.nasa.gov/catalog/PIA08737">http://photojournal.jpl.nasa.gov/catalog/PIA08737</a> (part of <a rel="nofollow" class="external free" href="http://photojournal.jpl.nasa.gov/catalog/PIA09172">http://photojournal.jpl.nasa.gov/catalog/PIA09172</a>)