List of plains on the Moon
The Moon has numerous named plains on its surface made of dark-appearing basaltic rocks. The plains are visibly prominent on the near side of the Moon because of their contrasting appearance from the surrounding lunar highlands, which are made up of anorthosite, an igneous rock containing significant concentrations of highly reflective plagioclase feldspar minerals.
Source: Wikipedia — List of plains on the Moon (CC BY-SA 4.0)