They say it is 30 percent less heavy than has long been accepted, based on a re-evaluation of data taken nearly half a century ago that suggests the density of the pyramid’s interior is actually that much lower.

“Our study shows the blocks of stone that had to be transported were relatively light for their size,” said Michinori Oshiro, a professor of Egyptology at Komazawa University in Tokyo, who was part of a study team that includes Hiroyuki Tanaka, a professor of particle physics at the University of Tokyo’s Earthquake Research Institute.

“That could change part of the established theory, such as how long it took to build it,” Oshiro said.

via Khafre pyramid much less dense than believed – The Archaeology News Network

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