360° VR Panoramas of Lassen Volcanic Park and the Modoc Plateau
Bumpass Hell Geothermal Area
Lassen Volcanic National Park, California

K. V. Bumpass was a local man who discovered this geothermal area in the 1860's On an early trip to the hot springs he burned his leg so badly it had to be amputated.

Bumpass Hell is an easy one mile hike from the road. A boardwalk (made of recycled plastic) leads through the small valley of volcanically powered steam vents, mud pots and fumaroles.


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View over Bumpass Hell

View over Bumpass Hell

A short side trail at the edge of Bumpass Hell leads to this small hilltop giving a view over the fumarole area.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
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Stream exit from Bumpass Hell

Stream exit from Bumpass Hell

A small stream gathers the runoff from the hot springs and exits the caldera through a narrow gap.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
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The Big Boiler steam vent

The Big Boiler steam vent

The Big Boiler has always been the most active feature in Bumpass Hell, emitting clouds of steam and making a loud roaring noise.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
See location in Google Maps

Mud pots

Mud pots

Bubbling mud pots occur several places in Bumpass Hell. It is said that the Disney animators studied them for a scene in the animated classic Fantasia.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
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East edge of Bumpass Hell

East edge of Bumpass Hell

There is an interesting contrast between the scorched earth of the fumarole area and the surrounding lush meadow and forest vegetation.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
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High walkway across Bumpass Hell

High walkway across Bumpass Hell

The wooden walkways through Bumpass Hell both protect the natural features from wear by foot traffic, and keep the unwary away from dangerous boiling water and steam.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
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End of the boardwalk at Bumpass Hell

End of the boardwalk at Bumpass Hell

The end of the Bumpass Hell boardwalk has a cold spring and stream on one side and sulfurous steam vents on the other.

Bumpass Hell Trail, Lassen Volcanic National Park, California

Date photographed: August 3, 2015
See location in Google Maps

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