"Welcome to Cog!" Came the Doctor's shout as he races for the door. Donna follows, his excitement quickly rubbing off. "You ready?" She just nods like bobble dog. The excitement fades quickly for her at the first glance outside and doesn't even try to hide the fact she is upset.
"A canyon?! We're at a canyon! How is that exciting and oh so wonderful!?"
"But it's not just any canyon Donna, it's the canyon of god. Or otherwise Cog." Donna just stares at him unsure if laughing would make the situation worse or not, so she stays nearly emotionless as waiting for him to do or say something more. "What do you think?"
"What do I think? I think I'm looking at a giant hole! That's what I think. And I thought time lords didn't believe in God or anything of religious notion?"
"We don't. God was a lawyer from 17310 on Forituxie he invented lime berry fruit. Great stuff! Ow! What was that for?" The Doctor yelps as his companions hand reaches over and smacks him.
"For being a total idiot! Come on let's go. I've been to Arizona so I have seen plenty of canyons in my time."