The largest explosion in the earth
this century occurred June 6-9, 1912, at Novarupta on the Alaska Peninsula.
More than a foot of volcanic ash
from this enormous explosion collapsed roofs in the community of Kodiak, 100
miles away, and choked rivers and streams, devastating Alaska's fishing
industry. Several villages along Alaska's southeast coast were deserted eternally.
The eruption of Mount Pinatubo,
Philippines, on June 15, 1991, blasted about 1 cubic mile of ash and rock into
the atmosphere. Avalanches of hot ash, gas, and wreckage of pumice roared down
the spur, filling valleys with as much as 600 feet of volcanic fragments.
A small eruption of the Nevada del Ruiz
volcano in Colombia on November 13, 1985, melted as regards 10 percent of the
volcano's ice cover, leading to a gigantic mudflow that inundated the city of
Armero and killed further than 23,000 people.
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