Lunar Crater Alphonsus — Named after King Alfonso X of Castile by Riccioli in 1651 (originally "Alphonsus Rex") Mosaic of photos by Lunar Reconnaissance Orbiter, made with Wide Angle Camera. Size of the image is 170×170 km, north is approximately up, illumination is from the east.
Photo Credit: By NASA (image by Lunar Reconnaissance Orbiter) - JMARS, Public Domain, https://commons.wikimedia.org/w/index.php?curid=45822635