French architect claims to have uncovered mystery of Egypt's Great Pyramid.

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A french architect claimed Friday to have uncovered the mystery about how Egypt's Great Pyramid of Khufu was built - with use of a spiral rampt to hoist huge stone blocks into place. The Grat Pyramid was built 4,500 years ago by Khufu. He has long befuddled scientists as to how its 3 million stone blobkcs weighing 2.5 tons each were lifted into place. An eight year study by Jean-Pierre Houdin released his finding showing a computerized 3-D mockup showing how workers would have erected the pyramid. The most widespread theory has been that an outer ramp had been used by the Egyptians. Houdin says he has taken into account the copper and stone tools available at the time, the granite and limestone blocks, the location fo the pyramid, and the strength and knowledge of the workers. According to his theory the builders put up an outer ramp for the first 141 feet, then constructed an inner ramp in a corkscrew shape to complete the 446-feet structure. You can see the computer model at "www.3ds.com/khufu".