PointofInterestRoadSigns.com - Yellowstone National Park - Explosion Crater


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Yellowstone National Park - Explosion Crater


Location of sign - East Entrance Road/US 14 in Yellowstone National Park


Photo taken June 2008

Explosion Crater, Explosion Crater Yellowstone National Park  

Close up view of sign


Explosion Crater, Explosion Crater Yellowstone National Park

Wide view of sign



Text of sign:


Explosion Crater


Quiet water disguises the site of a hydrothermal blowout.  Imagine the scene: tons of rock, steam, and boiling water exploding in the

air, leaving the crater that became the Indian Pond.


The instant of geologic catastrophe left lasting marks on the landscape.  Hardly a typical pond, this hollow is deeper than expected,

evidence of the force of the blast.  A rim of explosion debris encircles the shore.   The area remains thermally active, with steaming

springs visible Steamboat Point.


Most of Yellowstone's thermal systems release steam gradually, bubbling and hissing through geyser vents.  Here, the eruption

followed the same chain reaction as a geyser  - hot subterranean ground water flashing to steam so violently that it blasted  out

hundreds of feet of overlaying rock.


At least ten other  hydrothermal craters 50 to 5000 feet wide have been discovered in the park.


Graphics on the sign


In addition to the text there is a graphical picture describing the explosion crater and an inset map that locates the crater in the park. 


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