Stone dragging and ramps remain a mystery

WHAT WE KNOW

The large stones were carried from the quarries to the construction site by boat.

The construction was welldesigned and well-organised. Archaeologists have discovered an entire city which was apparently inhabited by construction workers. Clay tablets illustrate the process.

WHAT WE DON'T

It remains unknown how the stones were carried from the boats to the construction site. According to one theory, the 2-15 t stones were dragged on sledges across wet sand, i.e. the sand was more solid, easing the work.

Most Egyptologists think that the Egyptians used ramps for the construction, but we do not know exactly how they worked.

According to some archaeologists, the pyramid was built from within, based on a core of ramps, which zigzagged their way up through the pyramid. Small stones were used at the centre, whereas larger ones were placed on the outside, using scaffolding.