Potentially Dangerous Volcanoes That Could Spell Disaster

Mount Pinatubo, the Philippines

4,800 feet tall and located 55 miles northwest of the country’s capital of Manilla, Mount Pinatubo is a case study of how a seemingly quiet, inactive volcano can suddenly unleash its wrath on the populace. When it erupted in 1991 — for the first time in more than 600 years — it rained down ash and heavy rocks that led to the death of 700 people and left more than 100,000 homeless.