I can’t pass over this isthmus of craters between Mare Fecunditatis on the east (right) and Mare Nectaris on the west, when they are visible. The largest crater just above center is Gutenberg (77km diameter) with an equally interesting crater formation to its east (right), Goclenius (56km). Notice that Gutenberg is anything but a round crater but has a large extension to the south where the main crater merged with a more ancient smaller crater filling it with ejecta. Goclenius is likewise likely the merger of two craters with the smaller partially defined by the mountains that pinch in from the sides nearly cutting off the northwest end of this formation.
Running from the south wall of Goclenius up east of Gutenberg and Gutenberg E (42km) on the east wall of Gutenberg, can be seen the main rille of Rimae Goclenius that runs nearly 250km across the surface of the Moon. As the name implies these are multiple rilles and a short piece can indeed be seen east running parallel to the main rima and then going off at an angle to the north. When seen in the LROC QuickMap the graben-like nature of these rimae cab be appreciated.
West of Goclenius is Gutenberg D (20km) a teardrop shaped crater. Then below Goclenius are three rather prominent craters. Moving from Goclenius they are Magelhaens (43km), Magelhaens A (32km) and Columbo A (42km). Columbo, is the 78km diameter crater, cut in half at the bottom of this image. Notice that these craters are also somewhat teardrop shaped with pointed north ends not seen in other craters that are simply foreshortened. There are endless gem like these all over this isthmus and I would encourage you to explore at the next opportunity!
