Bumpass Hell

Bumpass Hell is a volcanic area inside Lassen National Park. You walk on a wooden walkway (the ground is too soft -- and in some places too hot -- to walk safely) past fumaroles (steam vents), boiling springs, and bubbling mud pots. The ground is colored with sulfur and other chemicals.

Oh, and note the romantic self-portraits -- our shadows in the mists of Bumpass Hell. :-)

Next: Lassen Peak.