The mare lies in an old basin or crater that is within the Procellarum basin. It is 242 kilometers (150 mi) in diameter and 55,000 km (21,000 sq mi) in area, and is bordered to the northeast by the mountain range Montes Apenninus. In the south of the mare is Rima Hyginus, a rille intersected by the crater Hyginus. The lunar material surrounding the mare is from the Lower Imbrianepoch, and the mare material is from the Eratosthenian epoch.
Lunar nearside with major maria and craters labelled.
References
^"Mare Vaporum". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
^"Mare Vaporum". lunar.arc.nasa.gov. Archived from the original on March 15, 2002. Retrieved October 18, 2007.
^Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
External links
Wikimedia Commons has media related to Mare Vaporum.