QUOTE : There’s a little canyon in the park where so much methane gas is produced naturally out of the ground that any living thing that wanders into it will die within minutes. The floor of the canyon is covered in elk and bison bones, and maybe even some old Indian bones.” He’d softened his voice and she found it oddly rhythmic. She felt a chill ripple through her. “But when you look at that white patch,” he said, “I want you to imagine something else. Imagine most of Yellowstone Park itself is that white patch. There’s a real thin crust covering hell itself, which is trying to boil over. That wants to boil over. And someday, it will. It’s known as the Yellowstone Caldera. In fact, darlin’, when it blows it’ll take two million people with it. It’s blown a few times through history, and we’re sixty thousand years overdue.