Sam blows out a breath that's relieved and a little more steadying than the last. He wouldn't blame his brother for giving him all the what the fuck, have you finally lost it? looks, but at least he seems open to listening.

With Dean, he'll take what he can get.

"There's lore on it," Sam assures Dean. Their kind of lore, too. "Dad had some knowledge of it. Biblically, it's known as Enoch... maybe that'll ring a bell. For once, it didn't want anything to do with me, personally. We were just one of the many that were randomly sent there."

He pauses, and adds subsequently, "I don't know how we left it, but we need to find out. It could send us back there at any moment's notice, and I'm not taking that chance."