Apparently the supervolcano has turned the park's roads into a soupy material, shutting down the park until the authorities fix it; and we know that's probably not going to happen. However, experts have previously said that if Yellowstoned is to erupt, it could cover the entire face of North America with ash. EDIT: It appears that it's only affecting one major road which connects to Great Fountain Geyser, White Dome Geyser, and Firehole Lake. I'm now a bit skeptical about this article after realizing its from [i]Russia Today[/i]