National Park · California
Lassen Volcanic National Park
All four volcano types & bubbling hydrothermals
StateCalifornia
Best seasonJuly–September
Don’t missBumpass Hell hydrothermals
TerrainVolcanoes & hydrothermal basins
Lassen is a quieter Yellowstone of the West — steaming fumaroles, boiling mud pots, and a plug-dome volcano, with alpine lakes and far fewer crowds. Snow lingers, so it’s a summer-into-fall park.
What to see
- Bumpass Hell
- Lassen Peak Trail
- Sulphur Works
- Manzanita Lake
- Kings Creek Falls
Check the park’s official site for current entrance fees, timed-entry or permits, road and seasonal closures before you go.