Tourists to scientists alike have been theorizing for centuries on how the Egyptians could have possibly built the Great Pyramid. Standing over 450 ft. tall, such a massive, perfectly built structure appears to be an impossible feat for anyone to have pulled off with the tools available over 4,500 years ago. While some have gone as far as to suggest the aid of aliens, scientists may have finally uncovered a much more likely explanation.

A little slope goes a long way

Archeologists recently uncovered evidence of a sloped ramp that may have been used as part of an intricate system to pull rocks by sled. The ramp appears to be flanked by steps on each side as well as a system of holes for posts that could have been designed to provide leverage.

Daily Mail

Though the ramp theory is hardly a new one, this is the first time that scientists have been able to uncover actual evidence of their existence.

Telltale carvings shed light on work campaigns

Perhaps equally as important, the researchers also found engravings along the sides of the slopes, that appear to show how workers were organized as well as various construction campaigns.

The location of the ramp’s discovery is tellingly close to an alabaster quarry, the material used to outfit much of the pyramid’s interior.

Mercer and the world’s oldest papyrus scroll

Though most of the pyramid’s exterior consists of limestone, recent studies have uncovered clues on how it too was transported to the build site. Archeologists have recently uncovered a series of now dry waterways that they believe may once have been man-made canals that allowed workers to load materials into boats and navigate them to the foot of the build site.

The discovery of an ancient scroll written by an Egyptian named Mercer went a long way in confirming this theory. In the papyrus, he details his experience managing 40 men, who helped create the canals. He also recorded the only known account of how they were used to ship casting stones straight into Giza.