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Midway Geyser Basin, Yellowstone National Park
Fast Facts

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ADDRESS
Old Faithful District
Yellowstone Nat'l Park
Wyoming 82190
ACTIVITIES
Natural Wonder
Walking
 
 
 
Points of Interest Nearby
 
 

Child at Midway Geyser Basin

 

Photo by Alfredo De Simone

The thermal features at Midway Geyser Basin may not gurgle and spout but they are brightly colored and colossal. At 370 feet (112.8 m) wide Grand Prismatic Spring is the largest hot water pool in Yellowstone and third largest in the world. Yet what makes this hot spring truly stunning is its ringed perimeter, green, yellow and orange. Excelsior Geyser, a gaping crater 200 x 300 feet, discharges more than 4,000 gallons (151,000 liters) of water each minute. And while Excelsior no longer acts like a geyser its orange and yellow carpet ushers run-off in elegant fashion.
Hot Spring Facts
Hot Spring Pools, Mammoth Hot Springs

Hot Spring Pools, Mammoth Hot Springs

Alfredo De Simone

 

There are lots of fun facts about hot springs. Did you know that?

  • Hot springs are a type geothermal feature just like geysers, mud pots and fumaroles.
  • Hot springs are heated by molten rock or magma a mile or more underground.
  • Hot springs differ from other geothermal features in one important way. They have more water than heat, rock and gas.
  • Hot springs, unlike geysers, don't have clogged pipes. The cracks in hot spring rock are wide enough for water to flow.
  • Hot springs have more water than heat whereas fumaroles have more heat than water. Hot springs emit water; fumaroles emit steam.
  • Hot springs have more water than gas so they don't pop and plop like mud pots do.
 
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