I think the pyramids are much older than most " experts " think !
I went to Egypt last summer and seen the pyramids in person the base looked like quadrilateral, or any polygon shape.
Nice, I'm envious, I would like to climb to the tops of all 3 pyramids !
I wish we would have did that to lol the pyramids was beautiful we visited the earliest one in Saqqara. 
Cool, some say the blocks of stone used to build them were poured ??
On the tour we learned they was built from Dimension stone which was natural stone.
The Sphinx also looks much older than 5000bc, the weathering and erosion might make it 10,000bc ??
Sphinx water erosion hypothesis
The Sphinx water erosion hypothesis is a fringe claim contending that the main type of weathering evident on the enclosure walls of the Great Sphinx was caused by prolonged and extensive rainfall that would have predated the time of Djedefre and Khafre, the Pharaohs credited by most modern Egyptologists with building the Great Sphinx and Second Pyramid at Giza around 2500 BC. Egyptologists, geologists and others have rejected the water erosion hypothesis and the idea of an older Sphinx, offering various alternative explanations for the cause and date of the erosion
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