Mammoth Hot Springs, Yellowstone National Park

Mammoth Hot Springs in the north end of the park, and unlike the Old Faithful area, where everything is bubbling not because it is boiling, here the bubbling is because of carbon dioxide.

Unfortunately, I bumped the controls on the Pentax, and I have a bunch of grossly overexposed pictures because of it.  This one came out okay:

Here's a video of the water moving across the terraces, leaving beautiful mineral deposits: