Plumas County has pristine lakes, scenic hikes, mountain views, and plenty of small-town charm.

A bumper crop of California Tortoiseshell butterflies are swarming Lassen Peak this summer. Here's why hikers are seeing clouds of them.

Rather than granite canyons or giant trees like California's other mountain parks, Lassen Volcanic National Park revolves around another natural wonder—the twisted topography that results from massive ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week’s contribution is from Michael Poland, geophysicist with the ...