How Long Did It Take to Build a Pyramid?

Herodotus visited Egypt 2,000 years after the Great Pyramid was built, and the information he recorded was given to him by his Egyptian guides. However, because of the amount of time that had passed since the pyramid was built, Herodotus' information on the Great Pyramid may be incorrect. Modern engineers have suggested that the pyramid could have been built in less time, taking into consideration the technology available at the time of construction.