The Great Pyramid of Giza is a well known ancient monument situated on the outskirts of Cairo, Egypt.

Within the building are two chambers from which four narrow square shafts are currently known to emanate. The shafts have been explored in recent times by robotic systems that were custom designed for the task and the internal stonework joints of each shaft's walls and roof has been surveyed.

The surveys show that the shaft's stonework is comprised of irregular length blocks and the reason for this has not been addressed in any of the surveying reports.

Here I show that stone's joint spacing is irregular because it encodes precision numerical data. It was found that the angles of the roof and floor of three of the shafts has been intentionally recorded in the stonework at the time of construction, in radians, and to 15 decimal places of accuracy. The stone joint's numerical descriptions of the shaft's angles were found to relate directly to a geometric system encompassing all four shafts which resulted in precision astronomical data also being extracted from the architecture which compares accurately with data from current ephemerides.

The results show that the building's architectural design is considerably more complex than currently thought and involves calculations of such an advanced scientific nature as to be able to conclude that the origins of the pyramid must be drastically different from current assumptions.