mudpots and hot springs - bumpass hell - lassen volcanic national park, bumpass hell, fumaroles, geothermal, hot springs, lassen volcanic national park, mountain, mudpots, pool, water mudpots and hot springs - bumpass hell - lassen volcanic national park, bumpass hell, fumaroles, geothermal, hot springs, lassen volcanic national park, mountain, mudpots, pool, water

mudpots and hot springs - bumpass hell - lassen volcanic national park

Hot springs and geothermal features at Bumpass Hell in the Lassen Volcanic National Park (California)

Lassen Peak Highway, California, USA

Lava beds and geothermal features in the Pacific North-West.­