The longer Dean spends down here, the more claustrophobic he feels, and the more he starts remembering digging himself out of his grave. That's really not a situation he feels like repeating, so he winds up falling into step with people, talking, trying to keep his mind from settling on any one image in particular. Even if they're talking about their inevitable doom, at least Dean's mind won't fill up with memories in the same way.

He thinks he spots Chuck, and he waits until he can verify -- slouchy, beardy, yup. It's Chuck. He joins him, giving him a smile in greeting.

"Always thought it'd be cool to be on The Mole. Not like this, though."