Lassen Volcanic National Park

Lassen Volcanic National Park protects an active volcanic landscape in northeastern California that includes lava domes, cinder cones, and hydrothermal areas. The park’s most prominent feature is Lassen Peak, a large volcanic dome that dominates the local skyline.

Visitors can explore a range of volcanic phenomena from accessible boardwalks at hydrothermal basins to higher-elevation trails that approach volcanic summits. The park contains established trail systems, backcountry routes, and winter recreation opportunities where snow conditions allow.

Lassen last produced eruptive activity in the early 20th century, and park management emphasizes public safety around hydrothermal features while conserving the volcanic terrain. The park was established to preserve these volcanic features and associated ecosystems.

Geographically it sits in northeastern California amid a landscape of forests, meadows, and volcanic peaks, with access by road from surrounding mountain communities.

• Summit elevation: The summit of Lassen Peak reaches approximately 10,457 feet (3,187 meters) above sea level and offers panoramic views from the top for those who hike the steep trail.

What to See#

• Lassen Peak: Lassen Peak is a prominent volcanic dome standing at about 10,457 feet (3,187 meters) and is a popular summit objective with a steep trail to the rim.
• Bumpass Hell: Bumpass Hell is the park’s largest hydrothermal area, featuring boiling springs, fumaroles, and boardwalked trail access for viewing geothermal activity.

• Plan visits for mid-summer or later (July-September) when the park's high-elevation roads and key trails such as Bumpass Hell are most likely to be open; snow often keeps parts of the park closed well into summer.
• Check the National Park Service site for current road and trail conditions before you set out-many routes are seasonally gated or subject to sudden closures after storms.