[3] Author Eric Burgess proposed this mare as the location of a future crewed lunar base, citing a 1989 study performed at the NASA Johnson Space Center.

[4][5] This small, roughly crescent-shaped mare region lies between the ring-shaped Inner and Outer Rook mountains that form part of the Orientale impact basin.

[6] Based on data collected during the Lunar Orbiter missions and from Earth-based telescopes, the mare includes some material from the surrounding highlands.

[8] The mare contains eleven sinuous rilles formed from lava tubes and channels, with lengths ranging from 4 to 51 km.

[9] The geological formations and the lack of collapse depressions suggest that the mare was formed by thin lava flow through tubes, rather than through basalt flooding by fissure eruptions.