The Problem of the Half Sealed Pyramid

Описание: The Bent Pyramid at Dahshur, built by Pharaoh Sneferu, is one of the most unusual pyramids in Egypt. Its famous change in angle halfway up the structure is well known, but the real mysteries may lie hidden inside the pyramid itself. Deep within its passage system are two portcullis blocks placed in sequence. Today the first one—the western portcullis—is lowered, while the second eastern slab remains raised. Between them is a carefully cut connecting tunnel that bypasses the closed block. For over a century archaeologists and researchers have tried to explain why the pyramid ended up in this state.

In this video I explore what I believe may be the most important foundational question surrounding the Bent Pyramid: was the western portcullis lowered intentionally, or did it close by accident during construction?

Over the past several months I cataloged dozens of unresolved problems mentioned by researchers studying the Bent Pyramid. When all of these puzzles are listed together the structure appears almost impossibly complicated, but not all mysteries are equal. Some problems appear to be foundational, meaning that solving them could potentially explain several other anomalies at the same time. After examining the evidence, the condition of the western portcullis stood out as one of these possible linchpin problems.

Inside the pyramid the facts are simple. There are two portcullis slabs in series. The first is lowered and blocks the western passage, while the second remains raised deeper inside the pyramid. Between the two lies a tunnel cut through the pyramid core that connects the lower chamber with the horizontal passage between the slabs.

Most explanations assume the first slab was lowered deliberately as part of the pyramid’s sealing process. But this assumption immediately creates several problems. If the builders intended to close the first portcullis, why construct two in sequence if only one was meant to be used? Why plug more than sixty meters of the western passage if the portcullis itself already blocked access? Why is there a roughly cut socket on the outer face of the slab that appears suited for inserting a lever beam? And why dig a long tunnel through the pyramid that bypasses the slab entirely?

These questions become easier to understand if we consider a different possibility—that the western portcullis was never meant to close at that stage of construction and instead fell accidentally.

Portcullis systems are inherently dangerous mechanisms. In my previous video I examined just how difficult it would have been to prop the slab open and how little margin for error the builders had. If a support wedge slipped or a worker bumped the stone at the wrong moment, the slab could begin descending unexpectedly. Once moving, there may have been only seconds for workers nearby to escape.

In any pyramid there are important questions, and in the case of the Bent Pyramid, the most important question might simply be: what really happened when the western portcullis came down?

Sources:
Interior Photos of the Bent Pyramid graciously provided by ISIDA project located at https://isida-project.ucoz.com/

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Ahmed Fahkry: Monuments at Dashur

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