Duane's World

View at the start of the Bumpass Hell Trail.

Beginning to descend into the hydrothermal area.

Bumpass Hell is the largest concentration of hydrothermal features in the park and was named after an early settler who severely burned a leg after falling into a boiling pool.

 Hiking the boardwalk through the boiling pools and steam vents.

Bumpass Hell is the largest hydrothermal area in the park, and marks the principal area of upflow of steam and discharge from the Lassen hydrothermal system.

The temperature of steam jetting from Big Boiler, the largest fumarole in the park, has been measured as high as 322°F (161°C), making it one of the hottest fumaroles in the world.

 Returning along the Bumpass Hell Trail. View of Brokeoff Mountain. At 9235ft, Brokeoff Mountain is the largest remnant of Mt. Tehama, an older and larger volcano which has eroded away over the past half-million years by ice ages and volcanic forces.