Lassen Peak may seem cool and calm, but there’s trouble bubbling under the surface. This volcano still has a core of hot magma that’s heating groundwater and producing lots of smelly steam. If you want to see this highly active geothermal area, you’ll need to go on a short hike to the oddly named Bumpass Hell area of Lassen Volcanic National Park. Lassen Volcanic National Park offers a perfectly nice scenic drive, with views of Lassen Peak and a handful of steam vents. But, it would be unfortunate if you came to Lassen and didn’t see the park’s most active […]