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(TFT) Re: Huge underground caves
At 4:01 -0500 4/1/06, TFT Digest wrote:
Huge holes can not exist underground. Given
time the rocks will flow and fill them in, or
fracture and cave in.
I always looked on this as an example of
"Tolkien is no Scientist".
I guess I am just saying that I am a bit
more bothered by "huge hollows underground"
than most people would be.
In general, I agree, but there are some exceptions. Magma chambers
and lava tubes, for volcanically active regions, and water-hollowed
chambers and galleries, in more water-soluble (sedimentary) types of
rock. In the *long* run Rick is right, they'll be full of something,
but it can take quite a while.
Meantime, though, neither the Misty Mountains nor Caradhras seemed to
be volcanically active, nor composed of sedimentary rock, from
anything I could find in the books, so in this specific case I find
myself in agreement with Rick yet again.
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