C.), who opted for a smaller pyramid that stood 215 feet (65 m) high.
Over the past two decades, researchers have made a number of discoveries related to the pyramids, including a town built near the pyramid of Menkaure, a study showing how water can make blocks easier to move and a papyrus found by the Red Sea.
How the ancient Egyptians did this is not fully clear.
In a report published recently in an AERA newsletter, Dash wrote that a circumpolar star like Polaris and lines of rope were likely used as part of the method.
It appears that Snefru's architects ran into trouble.