A corridor leading into the interior has thirty-two side chambers meant for storage of the burial equipment.

A pink granite sarcophagus was found in a trench which cuts through the structure, although it may date to a later time period.

The existence of underground chambers has been suspected, but excavations have not been possible as the structure is now part of a military restricted zone.

Reisner and Fisher observed that this is to be expected of the necropolis surrounding the pyramid of a pharaoh, the large tombs being those of the royal family and court officials.

No excavations are allowed, the original necropolis is overbuilt with military bungalows, and the shaft of the Unfinished Pyramid has allegedly been misused as a trash dump.