Has the mystery of how the pyramids were built FINALLY been solved? Scientists discover a unique hydraulic lift system at Egypt's iconic Pyramid of Djoser

Pyramid of Djoser was constructed using an ingenious water system, experts say It has long been a subject of debate - how exactly were Egypt's great pyramids built by the civilized world's first engineers? But a new study suggests that the oldest pyramid in Egypt, the Pyramid of Djoser, was built 4,700 years ago using an even more ingenious 'hydraulic lift'. A huge jet of water was blasted through the centre of the pyramid 'like a volcano', pushing the stones to the top, researchers believe The step pyramid of Djoser measures 200ft high and is believed to be the first pyramid in Egypt The new theory is presented in a new study led by Xavier Landreau, president of Paleotechnic, an archaeological research institute in Paris, France. While the shaft at the centre of the pyramid was already known about, researchers now present a new theory regarding its purpose Pyramid of Djoser, the world's oldest pyramid, was constructed south of modern Cairo, 4,500 years ago, just east of the Nile - the world's longest river The Pyramid of Djoser, about 200 feet high, is a 'step pyramid' – meaning its sides are a series of flat platforms or steps, unlike the comparatively level sides of the famous Pyramid of Giza.