Ella Clark includes in her collection three other Crater Lake myths, attributed to Klamath sources. In “The Origin of Crater Lake” (Clark 1953:53-55) describes a battle between the Chief of the Below World and the Chief of the Above World. The opening to the underworld was found in a vast mountain (“the high mountain that used to be”). In a development recalling the myth of Hades and Persephone, the Chief of the Below World falls in love with the beautiful daughter of a Klamath chief. She spurns him, and in revenge the Chief of the Below World tries to destroy the Klamath with fire. However, the Chief of the Above World pities the humans, and does battle with his underworld counterpart. Amid vast explosions and fire the Chief of the Below World is driven underground, and the mountain collapses upon him, creating Crater Lake.
I think that BIlly Pilgrim's journeys through time could instead be a social commentary on Post-Traumatic Stress disorder. Billy isn't skipping through time, instead he's an old man sitting at his home, his daughter is taking care of him, and when he closes his eyes he suffers his wartime flashbacks and delusions about traveling through space in which he lives in a dream with elements from his life, like how Montana Wildhack was the Porn Star from the book store that Billy visited to see the Kilgore Trout novels. It also explains why the boo