Bumpass Hell Hike
A high-elevation walk to Lassen's largest hydrothermal basin.
Route overview
Bumpass Hell Hike in California.
The route crosses exposed volcanic terrain before descending to boardwalks among steaming vents and boiling mud pots.
Trail facts
- Country
- United States
- Region
- California
- Distance
- 4.51 km
- Difficulty
- Moderate
- Elevation gain
- Not published by official source
- Best season
- Check current official seasonal access and conditions
- Trail type
- out-and-back
Access and logistics
- Permits and access
- Entrance pass required; no ordinary day-hike permit. Trail is seasonal and must be confirmed open.
Safety context
Stay on trail and boardwalk at all times. Hydrothermal crust can conceal acidic boiling water; steep sections, sun, altitude, and snow can add risk. Check current official conditions, closures, weather and access rules before departure.
Stay on trail and boardwalk at all times. Hydrothermal crust can conceal acidic boiling water; steep sections, sun, altitude, and snow can add risk.
Highlights
Bumpass Hell, hydrothermal area, boardwalk, volcanic trail
Why find a buddy
Match on pace, heat and altitude tolerance, child supervision, and boardwalk comfort.
Primary source
Explore and prepare
Discover hikes by intent, read the hiking guides, review hiking safety, prepare a BuddyPack, or browse hiking plans.
Route conditions, access, services and transport can change. Verify time-sensitive information before departure.