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have been used as the pole-star. In the
north face of the Great Pyramid is the en-
trance to an inclined passage, and six of the
nine pyramids at Gizeh possess the same
feature; all the passages being inclined at an
ˆ
ˆ
angle between 26A and 27A to the horizon
and in the plane of the meridian. It also ap-
pears that 4,000 years ago–i.e., about 2100
B.C.–an observer at the lower end of the
106
