 And they weigh about 350 tons. Okay, so it's a single piece of stone, 350 tons, 100 feet long, and we still don't know how they erected them. We really don't. It's one of the true mysteries. They were pounded out of a quarry. There's one quarry. They all came from the same granite quarry at Aswan, Egypt, in the south of Egypt. And granite is so hard that the Egyptians did not have metal that they could chisel them out with.