Four of the 18 volcanoes U.S. geologists consider the nation’s most threatening are in Oregon, and a couple are in Bend’s backyard.

Earlier this week, the U.S. Geological Survey released a study evaluating the threats posed by the 161 active volcanoes across the country according to 24 different factors. The study, which updates a report published in 2005, notes that four Oregon volcanoes — Mount Hood, the Three Sisters (listed as one volcanic system), Newberry Volcano and Crater Lake — rank among the 18 listed by the government agency as posing a “very high threat” of a dangerous eruption.

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