Alien base on Moon?

What IS that??? No idea how to title this one really so went with first thing that comes to mind. After going there on Google Moon and staring at this thing for quite a long time I can say yes, it is really there, not faked and I have no clue what it is. I found nothing else like it in any of the other craters. Not much to be said other than .. it’s there, take a look and tell us what you think it is. This is definitely one of the strangest things found on Google Moon. Coords: 22°42’“N 142°34