In the late Triassic Period - about 225 Million years ago,
(that was before Nikon developed the D700)
mighty trees had fallen into river beds and were penetrated
by deposits of silt, sand and clay, together with vulcanic ash.
These gradually formed quartz crystals
replacing the organic matter of the trees.
To this day you may examine these "petrified trees" and
actually touch something
which was alive many millions of years ago.
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