The Moon's western limb is fascinating to explore as the Sunset terminator approaches.
The 225mi long Carpathian Mts. form the southern boundry of the Sea of Rains.
Obviously, the impact that created Aristarchus and Kepler craters occured after that huge sea was formed. Tiny Aristarchus is one of the brightest Lunar features near Full Moon.
Grimaldi crater is one of the darkest Lunar features. It's proximity to the Western limb makes it easy to assess Lunar libration in longitude. There are times when Grimaldi is touching the edge of the limb! (Libration is not to be confused with libation. If I indulge in excessive libations, I will experience libration.)
The Riphaeus Mts. are my Lunar "M". They are actually pyroclastic deposits from the Moon's volcanic past.
Don't even get me started on Copernicus.
What else can I say?
Oh yeah. The Moon's phase is 37% this morning.

Canon EOS M10, 90mm MakCas
Prime focus at 100X
1/30s, ISO400