Yellowstone National Park in Park County, Wyoming — The American West (Mountains)
Orange Spring Mound
1. Yellowstone’s volcano heats water deep underground.
2. Under great pressure, the water percolates upward through buried limestone, dissolving a mineral called calcium carbonate.
3. Above ground, the water begins to cool and evaporate. Gasses are released and water pressure decreases. Orange Spring Mound gradually grows as the water flows over it, depositing calcium carbonate, or travertine.
Hot water flows over the mound after bubbling through several vents along the top.
Heat-dwelling bacteria and algae grow abundantly in Orange Spring Mound’s water, creating tapestries of “living color.”
Erected by National Park Service.
Location. 44° 57.974′ N, 110° 42.894′ W. Marker is in Yellowstone National Park, Wyoming, in Park County. Marker is on Upper Terrace Loop Drive, on the left when traveling west. Touch for map. Marker is in this post office area: Yellowstone National Park WY 82190, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Fort Yellowstone (approx. 0.4 miles away); A Changing Landscape (approx. 0.4 miles away); A Sense of Community (approx. 0.9 miles away); At Guard (approx. 0.9 miles away); Guard Duty (approx. 0.9 miles away); a different marker also named A Sense of Community (approx. 0.9 miles away); A Most Fortunate Thing... (approx. one mile away); Crime in Wonderland (approx. one mile away). Touch for a list and map of all markers in Yellowstone National Park.
Categories. • Natural Features •
Credits. This page was last revised on June 16, 2016. This page originally submitted on September 10, 2015, by Bill Coughlin of North Arlington, New Jersey. This page has been viewed 141 times since then and 32 times this year. Photos: 1, 2, 3. submitted on September 10, 2015, by Bill Coughlin of North Arlington, New Jersey.