Mare Vaporum

Mare Vaporum (the "sea of vapors") is a lunar mare located between the southwest rim of Mare Serenitatis and the southeast rim of Mare Imbrium. The lunar material surrounding the mare is from the Lower Imbrium epoch, and the mare material is from the Eartosthenian epoch. The mare lies in an old basin or crater that is within the Procellarum basin. To the south of the mare is a light colored thin line. This feature is Rima Hyginus. The mare is bordered by the mountain range Montes Apenninus.