Boiling mud pots are one of the many geothermal features located in the Bumpass Hell area of Lassen Volcanic National Park. Fumaroles, pyrite pools and hot springs sit nearby.
Boiling mud pots are one of the many geothermal features located in the Bumpass Hell area of Lassen Volcanic National Park. Fumaroles, pyrite pools and hot springs sit nearby. STEVE SHEA Special to The Bee
Boiling mud pots are one of the many geothermal features located in the Bumpass Hell area of Lassen Volcanic National Park. Fumaroles, pyrite pools and hot springs sit nearby. STEVE SHEA Special to The Bee