Could you imagine being the first person to ever explore an underground cave system on another planet?
On Mars, maybe stromatolites or other bacteria live in these caves!
On Mars, maybe stromatolites or other bacteria live in these caves!
I think there's a documentary on that: https://www.imdb.com/title/tt0078748/
if we do find a note in the cave saying claimed on behalf of Queen Victoria...probably best to leave.
This reads like the beginning of a Doctor Who episode.