Interesting article about the seven step pyramids along the nile. The story is marred by the continuing insistence that Khufu built the Great Pyramid at Giza 4500 years ago when the evidence says the Giza complex and Great Sphinx were built circa 11-12,000 years ago. This is the same time frame as the Gobekli Tepe temple mound was constructed. Dynastic Egypt built many great monuments, but the Giza Pyramids, as well as most of the other hard to explain ancient sites around the globe, were built by those living during the earlier period they called Zep Tepi, hence the First Times. That period of advanced civilization was destroyed during the rapid ending of the last ice age, which is the source of all the ancient floods myths. The three great pyramids were designed to survive that great disaster and into our time.