An interesting consequence of the moon acting "like a mirror" is that even a small amount of human activity (compacting the soil) will result in a dramatic darkening of that part of the full moon. I predict that future lunar bases and especially lunar "dirt roads" will be easily visible at full moon in even small telescopes, after the bases have been up there a few years (so the area around them gets well beaten down). Long enough lunar "roads" might even be just detectable to the human eye from Earth. Think of the appearance of the satellite tethers, but in reverse.