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to Point of Interest Road
Signs! A
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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
Close
up view of sign
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.
Please help us
out by submitting
a photo!
You
can find more information about the state of Wyoming here.
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