Djoser (also known as Netjerikhet, Tosorthos, and Sesorthos, c. 2670 BCE) was the first king of the Third Dynasty of Egypt, reigning for over twenty years. Some sources indicate a king named Sanakht as the first ruler of the Third Dynasty but this claim is challenged as Sanakht's name is only known from two reliefs, the Abydos king list, and the Turin papyrus, not from archaeological evidence. Early archaeologists identified Sanakht's tomb as mastaba K2 at Beit Khallaf based on the two reliefs mentioned above, which were found there; but this identification has been challenged and largely discredited. Manetho's chronology, routinely used to date the reigns of the kings of Egypt, is also unclear on who he was or when he ruled. Djoser's reign, following Khasekhemwy, is far more certain than the vague suggestions of a king named Sanakht and so he is now accepted as the first king of the Third Dynasty. Djoser is best known for his Step Pyramid, the first pyramid built in Egypt, although he initiated many other building projects; so many, in fact, that scholars have suggested a reign of almost thirty years to account for the number of tombs, temples, and monuments he commissioned.
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