<a href="https://en.wikipedia.org/wiki/Mons_R%C3%BCmker" class="extiw" title="en:Mons Rümker">Mons Rümker</a>, a volcanic complex on the Moon, in <a href="https://en.wikipedia.org/wiki/Oceanus_Procellarum" class="extiw" title="en:Oceanus Procellarum">Oceanus Procellarum</a>, in low morning illumination. Its diameter is approximately 70 km, and height is 1.3 km. Photo by <a href="https://en.wikipedia.org/wiki/Lunar_Reconnaissance_Orbiter" class="extiw" title="en:Lunar Reconnaissance Orbiter">Lunar Reconnaissance Orbiter</a>, made with Wide Angle Camera on 29 December 2009 from altitude 46.6 km. Sun elevation is 0.9°. Width of the photo is 100 km, north is approximately up.
NASA
Image <a rel="nofollow" class="external text" href="http://wms.lroc.asu.edu/lroc/view_lroc/LRO-L-LROC-3-CDR-V1.0/M116696225MC">M116696225MC</a> by <a href="https://en.wikipedia.org/wiki/Lunar_Reconnaissance_Orbiter" class="extiw" title="en:Lunar Reconnaissance Orbiter">Lunar Reconnaissance Orbiter</a>, processed with LROC WAC Previewer (v1.6.1). "Vertical travel" parameter was set to 11.7 px.