==Places at risk==Several mountains in the world, including Mount Rainier in the United States, Mount Ruapehu in New Zealand, and Galunggung in Indonesia, are considered particularly dangerous due to the risk of lahars.
Laharji z ognjenika Nevado del Ruiz v Kolumbiji so leta 1985 so popolnoma porušili mesto Armero in delno mesto Chinchiná in zahtevali 23.000 žrtev.