And, there area also measurements that suggest, while the floor of the caldera has been rising and falling like someone breathing (but over a much longer period of time than we breath), the average over time suggests that the floor is rising. A few of the authorities believe it may be building up to blow it's top one more time. It's a volcano that is large enough to destroy most of North America, and have a bad effect on every country on earth. It would change the climate and existence of every living thing on earth.
I could do with a bit of extra meat on me Anyway, I don't know what you guys are worrying about, Yellowstone will be the biggest BBQ on the planet! :sifone: