A obelisk on The mars moon Phobos.
Oh wait isn't phobos where the game doom is set?
Something something doom 3 was about something ancient they found wasn't it?
Okay I didn't play doom 3, also I am not sure about the veracity of the information.
But it does lead one to think doesn't it?
Then there is also the game dead space about a marker found somewhere, I don't remember if it was ever specified where it was found.
Now it doesn't need to be more than that, but it does lead to wondering doesn't it?
https://www.reddit.com/r/conspiracy/comments/1334alh/in_2009_33_scottish_rite_buzz_aldrin_said_on_cnn/
^ inspiration for this post, not sure about the information so it might be a big nothing, but it started me wondering.