Joseph West and his team suggest that the easiest way to build the pyramids would have been to roll the blocks.
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The Great Pyramid of Giza in Egypt is the only one of the seven wonders of the ancient world to survive largely intact. Almost 4000 years old, it is a vast structure constructed from 2.4 million limestone blocks, most about 2.5 tonnes but some weighing in at up to 80 tonnes. These were largely sourced from local limestone quarries.
That raises a famous question. How did the Egyptians move these huge blocks into place? One theory is that the blocks were dragged along the sand which offers reduced friction when lubricated with water. But although the Great Pyramid is close to the Nile, many pyramids are not and this would have made the transport of water as big an engineering task as the movement of the blocks.