Visitors snap photos and make anxious phone calls home—only after Googling, “Does Mount Shasta erupt?” Locals, ...

Ash released from shield volcanoes often builds up around the vent forming a steep, round hill known as a cinder cone. A lava tube may also form, beneath the surface of the ground, when low ...

Four types of volcanoes—shield, composite, cinder cone, and plug dome—can be found in Lassen Volcanic National Park, where they literally bubble and steam.

Newberry Volcano defies simple classification. While its broad, shield-like profile resembles ... contiguous United States—including cinder cones, lava domes, and expansive lava fields.