An underrated hike that is accessible from Warner Valley/Drakesbad area of Lassen. Not difficult to find, and trailheads are well marked. Trail is well maintained.
Horse-guided tours from Drakesbad also use this trail and it follows a small portion of the Pacific Crest Trail for a short bit. It's an easy hike- 2.1 miles to a neat geothermal part of the park that lets you get pretty up close and personal with some steam vents and mud pots. The water level was low though so I did get to hear so VERY deep rolling boiling noises, but couldn't see it bubbling in spots.
Very low populated trail once you get past the Drakesbad Ranch. The meadow is beautiful and there is a beaver that was hiding along part of the wooden gangplank path. Worth the trip!
Interesting forestry demonstration plot at the Hwy 36 trailhead. A couple of miles north (about 1/8 mile before crossing 28N83) the trail intersects remnants of the 1870s era Dutch Hill Ditch. You can save about 4 miles of hiking and 600 ft of climb by starting your trek at Stover Spring Campground, a primitive site at N 40 deg 17.07 min, W 121 deg 20.66 min; it can be reached by a logging road that starts from Hwy 36. Domingo Spring itself is about 1/2 mile east of the north trailhead; there is also a campground and picnic area at that site, along with fresh, cold water from the spring at a convenient faucet.
Fun hike! I enjoyed spending an afternoon completing this hike with my fianc and a friend! Once you reach Hell's Kitchen, be prepared for the smell to shock you! It's a very strong sulfur smell. The smell is worth it though. It's really cool to see all of the pools of water bubbling! It's definitely a hike I would recommend! The only negative thing I would say though is that the drive to get there is a little confusing! There was a nice gentleman along the road that pointed us in the right direction though :)