
Trying to create a true smooth-sided pyramid, Sneferu’s architects began with the same steep angle and inward-leaning courses of stone they used to create step pyramids. When this began to show signs of stress and instability around halfway up its eventual 105m height, they had to reduce the angle from 54 degrees to 43 degrees and begin to lay the stones in horizontal layers. This explains why the structure has the unusual shape that gives it its name.
Station: 298n309e · 32.1 km away · 285m
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