Oblique view of Mare Tranquillitatis, on the moon.  The rille in the foreground is unofficially known as <i>Sidewinder Rille</i>, and is located southwest of Maskelyne crater.  The crater Moltke and the Apollo 11 landing site (Tranquility Base) are in the upper right near the horizon.
NASA
1969
Apollo Flight Journal, Apollo 10, Photography Index, <a rel="nofollow" class="external text" href="https://www.hq.nasa.gov/office/pao/History/afj/ap10fj/photos/29-p.html">70-mm magazine P</a>, image <a rel="nofollow" class="external text" href="https://www.hq.nasa.gov/office/pao/History/afj/ap10fj/photos/29-p/as10-29-4299.jpg">AS10-29-4299</a>