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Have you ever been on a cave tour
and been told not to break off the stalactites because they grow an
inch every two hundred years? Then you wonder how exactly scientists
came up with that figure?
At the Guest River Gorge
this weekend, we were treated to a view of baby stalactites in action.
These guys clearly grew faster than average since the little stalactites
on the ceiling were already a few inches long and the "cave" in
question was a train tunnel built in 1922.
Mark figured that at the
rate calcite-laden wader was pushing through the cracks in the vaulted
ceiling, the whole thing would start collapsing in about 150 years. I
guess we're going to have to keep eating lots of kale if we want to be
around to test that hypothesis.