الهرم الأحمر
With the increase of innovation in Sneferu's building projects, one expects that his last pyramid, the Red Pyramid, will show the greatest complexity and change in architecture yet. Upon first glance, one may be disappointed seeing that the construction of the Red Pyramid seemingly is simpler than its predecessor. Lepre points out that some of the internal innovations that the previous pyramids boast seem to be missing in the king's last monument. Although the chambers and burial vaults are all present in the monument's main body, no ascending passageway has been excavated, nor is there evidence of a western entrance or diagonal portcullis. Although the absence of these features have dissuaded many archaeologists from further studying the Red Pyramid, Lepre is convinced that there are secret chambers waiting to be uncovered within the stone superstructure. Considering that the remains of King Sneferu have not yet been found, it still may be possible that his sarcophagus and mummy lie hidden in his mysterious last structure. Lepre claims: "the Red pyramid remains one of the chief pyramids that may possibly contain secret chambers, not the least of which may be the true burial chamber of King Sneferu himself." Whether or not this conjecture is true is left to modern archaeologists to determine.