I think they would be annihalated. A supervolcanoe is analogous to an asteroid of significance hitting this planet. It would be a world wide event in what it would belch out. Check out the Deccan Traps in India for an example. Its thought that that is what wiped out the dinosaurs. Not the asteroid in south america.
I read about that, but I don’t subscribe to it. I believe it was an asteroid that took out the dinosaurs. The earth has been hit by some asteroids, impacts so intense, they’d make the last caldera eruption in Yellowstone seem tiny in comparison. Impacts so great, if they occurred today, could wipe out the human race.
The Caldera in Yellowstone is not capable of wiping out the human race, but a large asteroid certainly is.
In that event, I don’t belive MMGW would be an issue any longer.
I have friends in Cody; the life there is worth the gamble...so they say.