so you mean we've figured out how to build large structures outside planet earth without the public knowing?
Right now the only close up images of either the moon or Mars that exist are the images taken by national and international scientific research groups such NASA, Космическая программа СССР, 国家航天局, Bhāratīya Antrikṣ Anusandhān Saṅgaṭhan, etc.), none of which see anything artificial beyond their own collective probes on either body.
So, like everyone else on this thread is asking you: what are you even talking about?
Please link to any of these 'large structures' otherwise we'll just continue to assume this is being pulled from your ass.
Rather not waste time finding photos which you will just argue is fake or not possible because of your "PhD" accreditation.
I mean it's on you since you're making the assertion.
Show us your best evidence. I'm not going to waste my time looking for something you may dismiss as being from an invalid source.
likewise.
You are the one asking to have your claim believed. I'm just asking to see the evidence you find most persuasive. I'm not promising to believe it, but on the other hand nor am I planning to mock you. I have not been persuaded by my previous investigations on this topic, but I have no way of knowing if I have examined the same evidence as you.