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A clean slate? (or should that be granite?)
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stonefree
68 posts

Re: A clean slate? (or should that be granite?)
May 02, 2011, 18:23
It seems as though the capstone edge is in exactly the right position and has just the right curvature to allow for different elevations of the Sun at different times of year. This is an ongoing investigation and we'll be keeping track of this and many other effects we've discovered!
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