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.

Located in Lassen Volcanic National Park, you can hike Lassen Peak, but roads in the area are often closed because of the weather. Hikers and climbers are warned to prepare for harsh conditions ...

If you're not interested in hydrothermal areas, you might prefer to hike Lassen Peak, a volcano that has not erupted since 1917. Due to its terrain and incline, this national park trail is ideal ...