Runoff from Excelsior Geyser trickles down into the Firehole River at Midway Geyser Basin in Yellowstone National Park.
Image Notes: Sky all one exposure, lower portion had a processed 7 exposure HDR result layered on the non-HDR frame below at around 50%. My wife just said oh wow when you add that it looks like it did when we were there. So hopefully it's natural and not over done. ;-)))