Researchers have suggested that the process of building the Egyptian pyramids was not as colossal an undertaking as is generally believed.
For centuries, people have theorized how the great pyramids were built. Some have suggested that they must have been constructed by extraterrestrials, while others believe the Egyptians possessed a technology that has been lost through the ages.
But, according to Donald Redford, professor of Classics and ancient Mediterranean studies at
, the process of building pyramids, while complicated, was not as massive a project as believed earlier. Penn State University
Estimates suggest that between 20,000 and 30,000 laborers were needed to build the Great Pyramid at
in less than 23 years. By comparison, Notre Dame Cathedral in Giza took almost 200 years to complete. Paris