Massive, Old Volcanic Eruptions on the Seward Peninsula

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Volcanic eruptions on the Seward Peninsula formed maars, like Devil Mountain Maar pictured here, that are larger than those found anywhere else on Earth. NPS photo.

Volcanoes in Alaska are most often associated with the Ring of Fire, which stretches from the Aleutians along the state’s southern coast through the southeast panhandle. So it may be a surprise to learn there are expansive lava flows in the Bering Land Bridge National Preserve on the Seward Peninsula. 

These are the northernmost volcanic features in North America that were created during the last ice age. When scientists studied these lava flows, they discovered an entirely new type of eruption. 

Maars are

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