Construction of the Egyptian pyramids

Summary

The construction of the Egyptian pyramids can be explained with well-established scientific facts; however, there are some aspects that even today are considered controversial hypotheses. The construction techniques used seem to have developed over time; later pyramids were not constructed in the same way as earlier ones. It is believed that huge stones were carved from quarries with copper tools, and these blocks were then dragged and lifted into position. Disagreements chiefly concern the methods used to move and place the stones.