This is by the entrance to Midway Geyser Basin.
pluginspage="http://microsoft.com/windows/mediaplayer/en/download/" id="mediaPlayer" name="mediaPlayer" displaysize="4" autosize="-1" bgcolor="darkblue" showcontrols="true" showtracker="-1" showdisplay="0" showstatusbar="-1" videoborder3d="-1" width="320" height="285" designtimesp="5311" loop="false" volume="100"> Press the play button to view a movie of it.
This is one of my favorite, Grand Prismatic Spring.
Mammoth Hot Springs Yellowstone Page Norris Geyser Basin Roger & Marian's Web Site, last modified 08/16/04