When Mount St. Helens erupted in 1980, it blew away the top 1,300 feet (400 m) of the mountain — about the height of the Empire State Building. ts can use their trunk like a snorkel in the water.

A very common case study for volcanoes is the eruption of Mount St Helens in the USA in 1980. Other case studies include the eruption of Mount Etna in Sicily in 1974 and Heimaey eruption in ...