Lassen Volcanic National Park

All four types of volcano, plus boiling earth.

Bumpass Hell is the boardwalk over hydrothermal ground. Lassen Peak is the climb. The park road is a late opener, often not fully clear until July California.

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Location

40.50° N, 121.42° WOpen in OpenStreetMap

Must-see spots

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Best time to visit

July–September

Trip planner

A Lassen Volcanic National Park itinerary

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Field guide

Lassen Volcanic National Park is a U.S. National Park in California. All four types of volcano, plus boiling earth.

When to go

July–September is the window most visitors aim for. Shoulder seasons mean fewer cars at trailheads. Winter can close roads; summer can fill parking lots by 8 a.m. Check NPS alerts the night before you drive in.

How to see it

Start with bumpass Hell boardwalk. Then lassen Peak trail when snow is gone. If you have a second day, manzanita Lake at dusk. Keep one spare hour for sulphur Works as a short roadside stop.

Park practicalities

An America the Beautiful pass covers entry at most national parks. Timed-entry reservations are used at several busy parks in peak season — book those before lodging. Wildlife has the right of way; 25 yards from most animals, 100 yards from bears and wolves.

Pack this in your notes

Stay on the boardwalk. The ground can break, and it is not a metaphor.
Download offline maps. Cell service drops in most parks.
Bring layers. Elevation and wind change the day faster than the forecast.
Enter the park early. Famous lots and shuttles fill first.

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Traveler reviews

Rate and review

Freya N.

10/10

Start early in Lassen Volcanic National Park

Manzanita Lake at dusk. Sulphur Works as a short roadside stop. Give Lassen Volcanic National Park days, not hours, and go in July–September. The trailhead line is the tax; the quiet after it is the park.

Sep 6, 2025

Marcus L.

8/10

Lassen Volcanic National Park is bigger than the postcard

Lassen Peak trail when snow is gone. All four types of volcano, plus boiling earth. Crowds thin if you are moving at first light. July–September is the window I would book again.

Aug 5, 2025

Wes P.

10/10

Start early in Lassen Volcanic National Park

Bumpass Hell boardwalk. Lassen Peak trail when snow is gone. Give Lassen Volcanic National Park days, not hours, and go in July–September. The trailhead line is the tax; the quiet after it is the park.

Jul 4, 2025