Special Report

50 Most Dangerous Volcanoes in America

Thomas C. Frohlich

Source: Game McGimsey (Alaska Volcano Observatory / U.S. Geological Survey) / Wikimedia Commons

50. Atka, Alaska
> Threat score: 71
> Last eruption year: 1812
> Pop. within 30 km: 207
> Pop. within 100 km: 207

Source: NOAA Photo Library / Flickr

49. Alamagan, Northern Mariana Islands
> Threat score: 72
> Last eruption year: 870
> Pop. within 30 km: 0
> Pop. within 100 km: 0

Source: C. Zeillemaker, U.S. Fish and Wildlife Service / Wikimedia Commons

48. Westdahl, Alaska
> Threat score: 74
> Last eruption year: 1992
> Pop. within 30 km: 0
> Pop. within 100 km: 305

Source: M.E. Yount, U.S. Geological Survey / Wikimedia Commons

47. Dutton, Alaska
> Threat score: 74
> Last eruption year: n/a
> Pop. of King Cove, the closest town: 938

Source: Peter Hamel, National Park Service / Wikimedia Commons

46. Novarupta, Alaska
> Threat score: 75
> Last eruption year: 1912
> Pop. within 30 km: 0
> Pop. within 100 km: 667