Mexico City is built on top of an underground resevoir!
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A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The Niagara Falls moves upstream at an average rate of about 295ft a century!
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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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Check your map! Virginia extends farther west than West Virginia.
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Every year, Alaska has about 5,000 earthquakes.
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The state of Florida is bigger than England!
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