Architect Claims to Solve Pyramid Secret

PARIS -- 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 ramp to hoist huge stone blocks into place.

The construction of the Great Pyramid 4,500 years ago by Khufu, a ruler also known as Cheops, has long befuddled scientists as to how its 3 million stone blocks weighing 2.5 tons each were lifted into place.