Inside the Bent Pyramid of Sneferu

---

The Bent Pyramid of Sneferu has two unique internal structures , with entrances on the north and west sides . From the northern side , a long sloping passage , about 174m , leads to a narrow antechamber with corbelled roof . The burial chamber , also corbelled , is above this antechamber and was perhaps reached by a stairway or a ladder .
The western entrance was discovered later after the northern one . It runs from the west side of the pyramid through to the portcullis blocking systems , the passage leading to the portcullis systems measures about 1 . 65 m . The blocking system leads to another burial chamber with a corbelled roof . This is at a level higher than the first one .
Between the two burial chambers , there is a passage (most probably built later) that connects them to each other . The exact reason for having two entrances remains unrevealed , but a suggestion mentions that the western system may be a vestige (replica) of the south tomb of Djoser . The long passage also resembles the general south-west orientation , as in the First Dynasty's royal burial ground at Abydos .