Mount Unzen is perhaps most famous for its destructive and fatal eruption on June 3, 1991 at 4:08 pm. This eruption caused the first large-scale pyroclastic flow, unprecedented at the time, which killed 43 people in the evacuation zone. Among these were French volcanologists Maurice and Katia Krafft, as well as American geologist Harry Glicken. The other forty fatalities consisted largely of those involved in the mass media, as well as firefighters, police officers, farmers and taxi drivers.