What If ?

Vids like the above show a lot of strange photos.   I like to think most have rather mundane explanations.   I enjoy looking at stuff like this though and imagining what if.   What if there was something or someone there before us who left some trace of their passing through ?

Sorta like the 1964 movie “First Men in the Moon” which was an adaptation of an H.G. Wells book.  In that we find that an old “crazy” guy in the old folks home is not crazy at all.