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What is it?

  1. Jan 9, 2008 #1

    Ivan Seeking

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    My first thought was that it may be an ant hill, but the photographer says it was a rock. I would still think it to be a petrified something?
  2. jcsd
  3. Jan 9, 2008 #2
    This area was certainly underwater. I suppose a vortex formed which grinded a funnel into the rock formation over eons. The river is pretty stagnant, but there were times when a rush of water from melted glacial dams flooded the area with intense surges of currents.
  4. Jan 9, 2008 #3


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    Kinda looks like limestone.
    Perhaps a spring or possibly a steam vent.
  5. Jan 9, 2008 #4
    Looks like a place where a mineral spring once flurished. I have even been to a city named Mineral Springs in ND, so its fairly common for that area.
    Last edited: Jan 9, 2008
  6. Jan 9, 2008 #5
    A mineral spring or vent makes more sense.
  7. Jan 11, 2008 #6


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    Mineral precipitate around a spring was my first thought as well. Would be helpful to see a bit of it up close and know something about the area it was found in to say for sure.
  8. Jan 11, 2008 #7
    A look-alike in Yellowstone park:

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