1. The ancient Egyptians who built the pyramids moved the massive stones by wetting the sand in front of a huge contraption that would slide on the wet sand. 2. It was believed that the stone blocks that made up the pyramids were made of carved limestone or concrete mixed with mud. 3. It would take over 170 men to pick up one block because the blocks were made of stone and stones are heavy. 4. It took over 15 years to build one pyramid because different pharaohs did not want the pyramids to be built. So they would be half way done with building the pyramid. Then the pharaoh would say stop building and it would take them at least 3 years to restart the building process.