'This Philippine volcano's 1991 eruption released 18 million metric tons of sulfur dioxide'
Mount Pinatubo
MOUNTAINS: This Philippine volcanos 1991 eruption released 18 million metric tons of sulfur dioxide
This Philippine volcano's 1991 eruption released 18 million metric tons of sulfur dioxide
This Philippine volcano's 1991 eruption released 18 million metric tons of sulfur dioxide
MOUNTAINS
Mount Pinatubo
MOUNTAINS