Cistern Spring, Norris Geyser Basin is easily viewed close-up from the boardwalk trail.  Norris is the hottest geyser basin and the coolest place in Yellowstone.  Due to an on-going eruption of Steamboat Geser, Cistern Spring is nearly empty here.  Yellowstone National Park, the first National Park in the world, still enthrals over three million visitors a year with it's geothermal features,wildlife,  rugged mountains, deep canyons and stunning ecosystem.
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