Great Pyramid of Cheops at Giza as astronomical
Great Pyramid of Cheops at Giza as astronomical observatory, showing how the passage to the subterranean chamber (not shown) acted as an observing tube, and how the passage on upper left could be used to observe time of solstice and equinox. Illustration of Piazzi Smyth's theory. Wood engraving 1891
Picture No
13904159
Media ID
48383953
Size
6000px x 3728px
(2.6MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive
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Acted Astronomical Cheops Equinox Giza Observatory Observe Piazzi Pyramid Solstice Subterranean Theory
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