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Lassen Volcanic National ParkCrags Lake with Chaos Crags in Background
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The park road opens

The main park road opened at 3:30 P.M. May 15.
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Lassen Volcanic National Park

To visit Lassen Volcanic National Park is to witness a brief moment in the ancient battle between the earth shaping forces of creation and destruction in Northern California. Nestled within Lassen’s peaceful forests and untouched wilderness, hissing fumaroles and boiling mud pots still shape and change the land, evidence of Lassen’s long fiery and active past.

 
sw entrance sign

Current Conditions

What is it like at Lassen Volcanic National Park right now?  Use the link below to find out current information on snow conditions, road opening status, weather forecasts, and more.
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Mudpot along Bumpass Hell boardwalk

Things To Do

The landscape of the park is as diverse as the ways you can enjoy it. Here you will find opportunities to visit over fifty tranquil mountain lakes, hike trails that have sweeping vistas or go deep into old-growth forests, explore active hydrothermal areas, camp under the brilliant night sky, fish in slow-rolling mountain streams, and experience a peace and quiet that only Lassen Volcanic can provide.
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Lassen Peak with clouds and blue sky

The eruption of Lassen Peak and what it means

On May 22, 1915, an explosive eruption at Lassen Peak, the southernmost active volcano in the Cascade Range, devastated nearby areas and rained volcanic ash as far away as 200 miles to the east. This explosion was the most powerful in a 1914-17 series of eruptions that were the most recent to occur in the Cascades prior to the 1980 eruption of Mt. St. Helens. Lassen Peak is the largest of a group of more than 30 volcanic domes erupted over the past 300,000 years in Lassen Volcanic National Park.
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steaming fumarole

Explore the Hydrothermal Areas

Hydrothermal (hot water) features at Lassen Volcanic fascinate visitors to this region of northeastern California. Boiling mud pots, steaming ground, roaring fumaroles, and sulfurous gases are linked to active volcanism and are all reminders of the ongoing potential for eruptions in the Lassen area. Nowhere else in the Cascade Range of volcanoes can such an array of hydrothermal features be seen.
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Write to

Lassen Volcanic National Park
P.O. Box 100
Mineral, CA 96063-0100

E-mail Us

Phone

Visitor Information
(530) 595-4444

Fax

(530) 595-3262

Climate

Weather plays a dramatic role at Lassen Volcanic National Park. Winter, especially, shapes the landscape; snow generally begins to accumulate each year in October, doesn't melt in most places until July, and can remain in isolated areas year round. Summer weather is more predictable, with warm, dry days, blue skies, and cool nights. Visitors to Lassen Volcanic National Park should be prepared for any kind of weather, any time of the year.
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Did You Know?  

Did You Know?
On the evening of May 14, 1915, incandescant blocks of lava could be seen bouncing down the flanks of Lassen Peak from as far away as the town of Manton, 20 miles to the west.

Last Updated: May 15, 2008 at 18:06 EST