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Welcome
to Point of Interest Road
Signs! A
collection of photos of road and trail signs. Click
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Yellowstone
National Park - Tower Fall - Hanging Valley
Location
of sign - Tower Falls in Yellowstone National Park
Photo
taken June 2008
Close-up
view of sign
Wide
view of sign
Text
of sign:
Hanging
Valley
Like
many of Yellowstone's waterfalls, Tower Fall began as a low ledge at
the junction of two different bedrocks. Rock at the
brink
and underlying the fall is a tough, volcanic breccia; the weaker downstream
rock erodes faster. Where Tower Creek drops
into
space, imagine the missing streambed - a channel of softer rock long since
worn away.
Just
downstream from the base of the Fall, the Yellowstone River enters a
narrow, swift-running gorge. Tower Creek cannot
downcut
fast enough to keep pace - and is left hanging high above the river.
Falling
water is hypnotic, like fire-gazing or wave-watching. In 1874
Thomas Moran's sketch of Tower Fall helped excite national
interest
in the new park.
Graphics
on the sign
In
addition to the text there is a two dimensional graphic explanation of
the geology of the falls. There is also an inset picture
of
a 1874 Thomas Moran sketch of Tower Fall.
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