http://www.newsweek.com/how-were-pyramids-built-scientists-discover-how-ancient-egyptians-moved-huge-1195783

Constructed around 4,500 years ago, the Great Pyramid of Giza is one of the Seven Wonders of the Ancient World and the only one that remains largely intact. For centuries, there has been considerable debate about how exactly the ancient Egyptians built the structure with researchers proposing several different theories.

Now, a team from the French Institute for Oriental Archaeology in Cairo and the University of Liverpool, England, have uncovered evidence which casts new light on the mysterious construction process.