Great Pyramid of Cheops at Giza as an astronomical observatory. Diagram 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 the time of solstice and equinox. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Heritage Images / Ann Ronan Picture Library |
Taille de l’image : | 4140 px × 2573 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |