Yup, that's what I was going to say, time to sit down and just start writing out your scene and find out who wanders onto the set to see what's going on. :)

Character: Dude, what's that?
Writer: What's what?
Character: That thing over there? Can't you see it?
Writer: *as he squints across the landscape he's just created* What thing?
Character: *rolling his eyes because clearly Writer is blind* Oh, for Cripe's sake, let me go over there and look for myself.

And away we go................