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The 20 Most Dangerous U.S. Volcano’s

The 20 Most Dangerous U.S. Volcano’s Below are the 20 most active volcanoes in the U.S., the ones that you should be keeping your eye on. 20. Iliamna Volcano – Alaska U.S.G.S Threat Score: 115 Aviation Threat: 34. Mount Iliamna, Source: NPS/Buck Mangipane/Wikimedia Commons Lying 134 miles (215 km) southwest of Anchorage, Alaska, Mount Iliamna is a 10,016-foot (3,053 m) high glacier-covered volcano

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