• Firehole_Spring_Splash.jpg
  • Great_Fountain_Geyser.jpg
  • White_Dome_Geyser.jpg
  • Fountain_Paint_Pots.jpg
  • Silex_Spring.jpg
  • Multi-Hued_Fumaroles.jpg
  • Clepsydra_Geyser.jpg
  • Take_Time_to_Smell_the_Flowers.jpg
  • Excelsior_Geyser_Crater.jpg
  • Excelsior_Geyser_Blues.jpg
  • Grand_Prismatic_Spring.jpg
  • The_Crossing.jpg
  • Old_Faithful.jpg
  • Castle_Geyser_at_Rest.jpg
  • Morning_Glory_Pool.jpg
  • Punchbowl_Spring.jpg
           

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Multi-Hued Fumaroles

This collection of fumaroles (steam vents) was bordered by rocks in a variety of pastel shades. The oranges and reds are due to mineral contaminants in quartz, I believe; the yellow on the left may be from sulphur deposited by the steam itself.
Multi-Hued Fumaroles