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Jamierussell 11-29-2007 11:32 PM

To Gierlinski: Filter line
Hi Michal

Most of the darkening that you can see is actually the transition of chalk into dark sandstone, even without a filter there is a darkening of that part of the rock and then on top of that are some dead plants that are very dark brown.
Indeed the filter does make it slightly worse but only very slightly. :-)

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