Volcano Disaster Assistance Program
The Volcano Disaster Assistance Program (VDAP) was founded by the U.S. Geological Survey and the United States Agency for International Development's Office of U.S. Foreign Disaster Assistance after the eruption of Nevado del Ruiz (Colombia) in 1985. The volcanic eruption melted a glacier triggering a lahar that killed 25,000 people.
Source: Wikipedia — Volcano Disaster Assistance Program (CC BY-SA 4.0)