Everything you need to understand or teach Ashfall by Mike Mullin.
Ashfall is a young adult novel by Mike Mullin, which revolves around the explosion of the Yellowstone Supervolcano, and the attempts of Alex Halprin and Darla Edmunds to survive its aftermath.
When the novel begins, Alex is a typical teenage kid, staying at home for the weekend in Cedar Falls, Iowa, while his mother, father, and sister go to visit his uncle and his family in Warren, Illinois. The supervolcano erupts...