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Global Volcanism Program | Image GVP-01914

The 1991 eruption of Pinatubo in the Philippines created a new caldera with an average diameter of 2.5 km. Caldera collapse occurred following the ejection of around 5 km3 of material in one of the world's largest eruptions of the 20th century and lowered the height of the volcano by about 300 m. This 1994 view from the NW shows a lake within the caldera and two small islands from a partially submerged lava dome that was erupted in 1992. Photo by Ray Punungbayan, 1994 (Philippine Institute of Volcanology and Seismology).

The 1991 eruption of Pinatubo in the Philippines created a new caldera with an average diameter of 2.5 km. Caldera collapse occurred following the ejection of around 5 km3 of material in one of the world's largest eruptions of the 20th century and lowered the height of the volcano by about 300 m. This 1994 view from the NW shows a lake within the caldera and two small islands from a partially submerged lava dome that was erupted in 1992.

Photo by Ray Punungbayan, 1994 (Philippine Institute of Volcanology and Seismology).

Keywords: caldera | lava dome


Pinatubo