 Exploring the island for survivors, they discover a mass grave where all the surviving San Lorenzans committed suicide by touching "ice-nine" from the landscape to their mouths on the facetious advice of Bokonon, who has left a note of explanation.Displaying a mix of grief for her people and resigned amusement, Mona promptly follows suit and dies.The horrified narrator is discovered by a few other survivors, including Newt and Frank Hoenikker, and he lives with them in a cave for several months, during which time he writes the contents of the book.