SULPHUR WORKS: The rotten egg odor of sulfur is the first thing you notice when you get here. Sulphur Works is the only geothermal feature in Lassen Volcanic National Park that is accessible from the main park road.
Lassen Volcanic National Park boasts three of the four geothermal features that exist: fumaroles (steam vents), boiling springs, and boiling mudpots. The primary attraction at Sulphur Works – a boiling mudpot five feet across – bubbles next to a sidewalk. Pillars of steam from fumaroles rise across the road. Clay minerals, formed when hot, acidic water percolates through volcanic rock, splash their vibrant palate of yellow, orange and red across the landscape. #lassenvolcanicnationalpark #sulphurworks #geothermalfeatures #mudpots #canon #canonphotography #nationalparkservices #nationalparkservice #nationalpark #rotteneggsmell #findyourpark