PointofInterestRoadSigns.com - Yellowstone National Park - Solfatara

 

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 Welcome to Point of Interest Road Signs! A collection of photos of road and trail signs.  Click here for more Wyoming Signs

 

Yellowstone National Park - Solfatara

 

Location of sign - the Norris Geyser Basin trail in Yellowstone National Park

 

Photo taken June 2008

Solfatara, Solfatara sign, Norris Geyser Basin Yellowstone National Park  

Close-up view of sign

 

Solfatara, Solfatara sign, Norris Geyser Basin Yellowstone National Park

Wide view of sign

 

Text of sign:

 

Solfatara

 

Unstable Ground

 

This hillside is venting.  As sulfuric acid, gases, and steam escape, they create a barren and very dangerous landscape called 

solfatara: scalding mud and steam are often barely covered by hot crumbling decomposed rock.  Unlike other geothermal features,

this solfatara's high concentration of sulfuric acid breaks down the surrounding rock making a confined "plumbing system" unlikely-

the gases and steam escape less dramatically.

 

Sometimes a solfatara has larger, well-defined vents like those at Roaring Mountain (just North of Norris Junction).

 

Graphics on the sign

 

In addition to the text there is a picture of the solfatara at Roaring Mountain.

 

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