7 dormant volcanoes you may not know about

Beautiful on the outside, these sleeping giants may one day awaken with destructive power.

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Quiet before the storm ...

The quintessential image of a volcano glowing and spewing lava is something we can all picture. These violent and catastrophic moments in a volcano's history, however, are interspersed with long periods of relative calm, stretching from a few hundred to several thousand years.

Over time, these volcanoes can deceive with picturesque beauty concealing scars from past eruptions. What may appear as a majestic mountain capped by snow and surrounded by trees is in reality one of nature's most destructive forces. Take a virtual tour as we highlight some of the world's sleeping giants that may yet awaken to reveal their true fiery colors.

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