[anamax]

They're in the US. One is actually well known, but it looks like no one thinks of it that way, at least for now.

[cdibona]

Ooo, ooo are you talking about the La Brea tar pits?

[ibsulon]

ANWR? That's a cold place to be without clothes.

[anamax]

(1) I doubt that ANWR has ground-level oil because I think that the Inuit would have exploited it.

(2) The Inuit know, or at least knew, how to survive in that area without significant tech. If "all the tech disappears" happens in winter and they wake up naked and outside (with no inside available), they don't wake up. If it's summer, they can cope.