While interesting, the author got his vulcanology facts wrong. Experts believe that when Yellowstone erupts, as it surely will, there will be a massive lava and pyroclastic flow, but no ash cloud. There's not enough dissolved gasses or pressure to generate a massive explosion. Instead it will ooze lava that will cover hundreds of square miles. Outside the lava flow, there won't be very much damage at all.

"Ain't only three things to gamblin. Knowing the 60/40 end of a proposition, money management, and knowing yourself." - Puggy Pearson

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