Where did the workers find the stone that built the pyramids?

Due to the large quantities required it was usual for the builders to use stone found close to the construction site. When this was not available as was case for some Middle Kingdom pyramids mud brick was used. The fine white casing stones used on the Giza Pyramids and elsewhere came from el Tura located on the east bank of the Nile. The fact that the river Nile was navigable made it possible to transport granite from the quarry at Aswan over long distances (400 miles or 644km in the case of the Giza pyramids).