What good would treasure even be, in a place like this? There surely isn't any currency but that of survival.

[ This world is strange, and Castiel doesn't think much of the creatures in it, but hey--at least they're not Leviathan. Everything here has to eat you one bite at a time, rather than in one go. ]

But you're right. They must come from somewhere, and perhaps we can eliminate them at the source. You've been most helpful.