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Expansive lava flows in the Sáttítla Highlands was captured by satellites ahead of the recent designation of the area as a national monument.

Unlike other volcanoes around the world that can go centuries between ... Back in December, a massive magnitude 7.0 ...

But did you know it's not the only volcanic national park in California? While Lassen may be famous for its complex volcanic geology and active volcanoes, California's underrated Pinnacles ...

The 224,000-acre Sáttítla Highlands National Monument is in Northern California and features the dormant Medicine Lake Volcano. Biden, in a speech ahead of the monument proclamations ...

In this photo provided by National Park Service, a fountain of lava spews from an eruption of Kilauea volcano in Hawaii ...