Martin Isler outlined the various theories in his article "Concerning the Concave Faces on the Great Pyramid" (Journal of the American Research Center in Egypt, 20:1983, pp. 27-32):
1. To give a curved form to the nucleus in order to prevent the faces from sliding.
2. The casing block in the center would be larger and would serve more suitably as a guide for other blocks in the same course.
3. To better bond the nucleus to the casing.
4. For aesthetic reasons, as concave faces would make the structure more pleasing to the eye.
5. When the casing stones were later removed, they were tumbled down the faces, and thereby wore down the center of the pyramids more than the edges.
6. Natural erosion of wind-swept sand had a greater effect on the center.
Мне ближе версия Мараджильдо ,что при снятии облицовки по центру больше камней катилось – так как ее сдирали с Хуфу и Менкауры ,а вот с Хафры она была сорвана при землетрясении сразу всем пластом на одной грани. Поэтому ее сверху разбирали и камни катились по облицовке,а не по основе.
Ждем мыслей великих Джея и Агафона911
