On June 14, 1914, three men climbed Lassen Peak to see why a seemingly dormant volcano had started rumbling 16 days before. Now, peering into a newborn crater, they felt the ground tremble.

Lassen Volcanic National Park is worth visiting. The highlight of the park is Lassen Peak, the largest plug dome volcano in the world and the southernmost volcano in the Cascade Range. I highly ...

Lassen Peak is one of the largest plug dome volcanoes in the world, and its most recent violent eruptions from 1914 to 1917, photographed by B.F. Loomis, captured the attention of the nation. Lassen ...

Tucked away in far northeastern California, Lassen offers sweeping grandeur and hydrothermal ... The park's namesake peak is the one of the largest plug dome volcanoes in the world — a type of volcano ...

They detected these reservoirs below Mount Rainier, Mount St. Helens, Mount Hood, Newberry Volcano, Crater Lake and Lassen Peak. Three Sisters and Mount Shasta did not show similar patterns ...

Tired of crowded national parks, or want something new? Here are less visited national parks in California, what months to visit and what not to miss.

What not to miss: The challenging 5-mile round-trip Lassen Peak Trail offers spectacular views. On a clear day, hikers can see Mt. Shasta, another active volcano more than 100 miles away.