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8 under-the-radar gems of the National Park Service

By: Matt Hickman on April 2, 2010, 6:38 p.m.
Lassen Volcanic National Park landscape

Photo: Zack Frank/Shutterstock

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Lassen Volcanic National Park, California

The word "volcanic" suggests something hot, active, impetuous. In terms of human traffic, Lassen Volcanic National Park in the southern Cascade range is pretty sleepy. But don't be fooled. Just because the park is less visited than other parks in California doesn't mean it's a snoozefest. In fact, it's quite the opposite. Filled with boiling mud pots, steam-spewing fumaroles and a decidedly mercurial volcano, Lassen Peak, this park is a real treat for those who like their terrain unsettled, their weather unpredictable and their trails to be called "Bumpass Hell."