15 March 2000 (afternoon)

At Dashur we stop first at the Bent Pyramid which, like Meidum, belongs to Sneferu. It’s the third-largest pyramid in Egypt.

Dashur — the Bent Pyramid

The reason for the name is obvious. The builders reportedly began with a core at a slope of 60 degrees, then added a low perimeter reinforcement at 55 degrees, and then about halfway up changed the remainder to 43 degrees.

Approaching the Bent Pyramid

The upper and lower portions also have different styles. The  lower blocks — both core and girdle — slope down and in as accretion layers, just like Djoser’s Step Pyramid, the pyramid of Sekhemkhet (Djoser’s successor), Meidum Pyramid, and a pyramid tentatively attributed to Khaba at Zawiyet el-Aryan. But once the angle changes the courses are set in horizontal layers for the first time.

Bent Pyramid Casing Stones

Another interesting feature: most of the casing stones are still in place and the missing ones are at top, not the bottom – just the opposite of what one might expect in a stone looting situation. The remaining casing stones give us a chance to imagine a fully finished pyramid in all its smooth, bright, limestone glory. It must have dazzled, although now the look is more like a thin layer of icing spread on an enormous scone.

Closer look at core blocks, the Bent Pyramid

The Bent Pyramid is unsafe and so we can’t go inside, but walk all the way around. (There’s a subsidiary pyramid to the south, too.)

Pyramids were built in stages and Bill, who’s an engineer, grabs a flake of limestone and kneels in the sand to illustrate. Scholars are still debating the reason for the angle change of this pyramid. Was it planned from the start or an innovation in response to subsidence problems?

The ancient Egyptians placed the Bent Pyramid directly on desert soil, not on rock. The interior chambers are shored up with cedar beams, apparently proving there were signs of instability even during construction. Most Egyptologists have thus concluded that stability issues were the reason for the change in angle — to lessen the weight of stone — but there are those who believe the angle may have been a deliberate choice arising from changing religious beliefs. The interior, which I now long to see more than ever, has two entrances (intended, not just robber’s tunnels) and three magnificent corbelled chambers.

If you’d like to read more about the Bent Pyramid and see some photos of the interior then I recommend this link: The Guardian’s Bent Pyramid

Exposed corner, Bent Pyramid