Moon crater <a href="https://en.wikipedia.org/wiki/Daedalus_(crater)" class="extiw" title="en:Daedalus (crater)">Daedalus</a>.
NASA (photo by Apollo 11)
<a rel="nofollow" class="external text" href="http://www.apolloarchive.com/apollo_gallery.html">The Project Apollo Archive</a>, <a rel="nofollow" class="external text" href="http://www.hq.nasa.gov/office/pao/History/alsj/a11/AS11-44-6611HR.jpg">photo AS11-44-6611</a> <br>see also <a rel="nofollow" class="external free" href="http://www.hq.nasa.gov/office/pao/History/alsj/a11/AS11-44-6609.jpg">http://www.hq.nasa.gov/office/pao/History/alsj/a11/AS11-44-6609.jpg</a>