It has been “debunked”, which means a “good enough” explanation has been given that anyone bothered by this possibility can let it go, by stating there are simply two craters, and apparently some sort of dark path between them; that it is an optical illusion.
Certainly possible. But note the white circle is actually a hexagon. How do meteor impacts create hexagons?
I got on this by looking up a time when the idea that there were towers on the Moon actually got mainstream attention. It was published in the Washington Post and elsewhere. Here is one treatment of the story, from 1970, a busy year on all fronts: http://www.astrosurf.com/lunascan/argosy_cuspids.htm
What seems to have happened is this just came and went. There was a brief furor, NASA stopped talking about it, and the news cycle marched on. And obviously, with the right lighting, you could make an ant look huge, but unless NASA got its data wrong, reasonably exact calculations could be done with their data.
I’m not saying I believe all this. I have no idea.
It is an interesting, and apparently well attested seeming fact even according to many mainstream scientists, that the moon appears hollow. This is evidenced by how low its overall density seems to be gravitationally, and by seismic measurements, which show the surface ringing like a bell. Each lunar mission placed seismographs they left behind, then intentionally crashed the lift-off rocketry to see what happened. They created, in other words, a mild quake, then measured the results. There didn’t seem to be anything in the middle to dampen it. In one case, it rang for nearly three hours, and the ringing went several miles deep.
Conspiracy theorists, need I mention, think the moon is constructed, and that the fact that we never see the back side of it is quite intentional.
Again, I look for possibilities. I don’t need to actualize, to concretize, to manifest possibilities into firm beliefs until some sort of decision needs to be made. I can’t do anything about any of this, no course of action is possible as far as I can see, regardless of what I conclude, so I just leave all this floating out there.