wellis
Mount Pinatubo had lay dormant for about 450 years before an earthquake of magnitude 7.7 struck the area in June 1990.
Mount Pinatubo
1991 awakening
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replied to: wellis
inzmtns
Replied to: Mount Pinatubo had lay dormant for about 450 years before an...
Volcanic activity increased dramatically beginning with a series of earthquakes in Match, 1991.