Dean stared up.

And up.

He turned to Sam, mouth working helplessly.

"You okay there, buddy?" Sam asked, trying not to laugh.

After a little choking and sputtering, Dean managed to get out, "Are you out of your freaking mind?"

"What?"

Dean pointed at the Arch stretching gracefully above them. "It's – do you know how high that thing is?"

"630 feet," Sam said promptly and with a great deal of enjoyment.

Dean goggled at him. He repeated, forcefully, "Are you out of your freaking mind?"

Sam laid a comforting hand on his shoulder. "Gotta go where the monsters take us, dude."