Which volcano in the Philippines erupted after remaining dormant for approximately six centuries?
Mount Pinatubo in the Philippines erupted in 1991 after being dormant for roughly 600 years. It was one of the largest volcanic eruptions of the 20th century. The eruption was so massive that the sulfur dioxide it released into the stratosphere caused a measurable drop in global temperatures for the following year. ANSWER: (B) Mount Pinatubo
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Located on the island of Luzon, Pinatubo’s 1991 eruption was a classic example of a dormant volcano “waking up” with catastrophic force. It ejected roughly 10 billion tons of magma and created a massive caldera. The eruption coincided with a typhoon, leading to deadly “lahars” (mudflows) of volcanic ash and rainwater that devastated the surrounding plains. The event led to the permanent closure of the U.S. Clark Air Base. It remains a primary case study for how long-dormant volcanoes can still pose a massive risk to modern civilization.