Where did the Egyptians keep limestone and sandstone?

Much of the stone was cut from a plateau near the pyramid site. Some harder and smoother stone came from quarries just across the Nile. Stone could also be - and was - brought from quarries all along the Nile for a distance up to 100 miles upstream. The ease of transport by water made this a simpler proposition than getting stone from closer by, but overland. After all, a couple of camels can haul a barge, whereas a single stone block might need 200 men to drag it across the desert sand.