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we all feel as if we are chased by a big nasty cloud.. we need to learn to overcome our dangers and ghosts of life to move forward sand storm

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from Live Science

In Photos: The Colossal Eruption of Mount Pinatubo

Caldera CollapseCredit: USGSThe June 15 eruption created a 1.5-mile-wide (2.5 km) collapse caldera (shown here on June 22, 1991) and filled valleys around Pinatubo with pyroclastic-flow deposits. The new summit elevation of Mount Pinatubo dropped from its pre-eruption elevation of 5,725 feet (1,745 meters) above sea level to 4,872 feet (1,485 m).

Learn about the 1991 Mount Pinatubo Volcanic Eruption: Mt. Pinatubo eruption plume, July 1991, from Clark Air Base control tower

from Live Science

History's Most Destructive Volcanoes

The June 12, 1991 eruption column from Mount Pinatubo taken from the east side of Clark Air Base.

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from Live Science

In Photos: The Colossal Eruption of Mount Pinatubo

On June 15, 1991- Mt. Pinatubo (in the Philippines) blew its top again, creating the 2nd. largest volcanic eruption of the 20th. century! The eruption was a VEI-6, & caused high-speed avalanches of hot ash & gas (pyroclastic flows), giant mudflows (lahars), & a cloud of volcanic ash that spanned hundreds of miles across.

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from About.com Education

Learn about the 1991 Mount Pinatubo Volcanic Eruption

Learn about the 1991 Mount Pinatubo Volcanic Eruption: Mt. Pinatubo eruption plume, July 1991, from Clark Air Base control tower

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Mount Pinatubo Adventure Trek with Pinoy Travel Bloggers - http://outoftownblog.com/mount-pinatubo-adventure-trek-with-pinoy-travel-bloggers/