This article was written by Phineas Upham,
The exterior of the Great Pyramids of Giza is an incredible feat of architecture, with angles measuring precisely at 51 degrees and heights that make lifting those huge limestone blocks seem impossible. Yet the pyramids’ most intriguing fact is that within that precise structure, a network of tunnels and alcoves exist. Were these tunnels carved out after the fact? Did the planners actually have the knowledge to build these pathways into their structures? The truth is fascinating.
Tunnels
For a long time, archaeologists believed that the Egyptians completed the pyramid, then carved their own way through the structure to bury their leaders. In fact, we now believe the Egyptians actually plotted these tunnels into their construction. This is amazing considering that these tunnels did not collapse under the weight of the structure above them.
Small Notches
There were also notches etched into the edge of each pyramids, which Egyptologists now believe was used to pivot blocks on their way up the structure. This would have made lifting the blocks up each ramp possible with levers and ramps, only if there was a ramp there to begin with.
Internal Spiral Ramp
The tunnels may have served a practical purpose. There have been infrared cameras that uncovered evidence of a spiral ramp leading up into the interior of the pyramid. This suggests that the outer ramps had been constructed of stone that was later recycled to build the inner portion of the pyramid. This created a new ramp, where the finishing blocks were moved into place using the same techniques to build the bottom.
About the Author: Phineas Upham is an investor at a family office/hedgefund, where he focuses on special situation illiquid investing. Before this position, Phineas Upham was working at Morgan Stanley in the Media and Telecom group. You may contact Phineas on his Twitter page.