Geiser (GI-zehr), a retired businessman who lives alone in a house in a village high in the Swiss Alps. His wife died years before the action of the novel. He is seventy-three years old and is beginning to experience symptoms of senility. The novel begins during the last few days of a severe storm that has caused some minor landslides in the area. The roadways are blocked, and there have been some disruptions of telephone and electrical service. Geiser passes the time building a pagoda out of crisp bread and reading encyclopedia articles about thunder and lightning. He gradually becomes more involved with his encyclopedia readings and obsessively peruses pieces on weather, the local geography and its history of landslides, the age of the dinosaurs, and the vast eras of geological time. Geiser is very concerned with the possibility that he may be losing his memory as a result of senility and thus starts to read articles about the symptoms of aging. He makes lists of various items as a test of his memory, such as types of thunder, the supplies in his kitchen, and the contents of his deep freezer. He takes notes on his reading at first but then abandons that and cuts out the encyclopedia articles instead. He tacks them up on the walls of his house, which soon become completely covered. When neighbors come by to bring him soup, he refuses to answer the doorbell. At one point, in a state of disorientation, he kills his pet cat and roasts it in the fireplace. Geiser decides to hike over the mountain pass into the next valley, a dangerous journey for a man his age. He gets lost several times. Exhausted and unable to make the trip, he returns home. Having suffered a mild stroke, he falls down the stairs and injures himself slightly. Telephone service has been restored, and his telephone rings periodically—presumably his daughter calling—but he refuses to answer it. He begins to remember a climb he made with his brother some fifty years earlier, on the Matterhorn. With the roadway cleared, his daughter arrives to check on him; it is likely that she will have to commit him to a home for the aged.