If you can stay longer, climb Cinder Cone, an outstanding example of the results of volcanism, and, if you have the stamina for a more demanding trek, try Lassen Peak. Four types of volcanoes ...

Open since 1909, this Portland gem is also known as America's First Urban Quiet Park. Explore its many trails, reservoirs, ...

The park boundaries contain the remnants of two ancient cinder cone volcanoes, which are still accessible today via the park's 2-mile Cinder Cone Trail. Elsewhere in the park, hikers can walk past ...

A snowy cinder cone on Mount Lassen in Northern California ... They determined that the water cycle plays a key role in explosive volcanoes in the Cascade Range. Disclaimer: AAAS and EurekAlert!

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 ...