In my opinionThe Labyrinth had an "upstairs" and a "downstairs". In ancient times the Greek historian Herodotus was permitted a tour of the upstairs based on which he gives a description of its huge size. But Herodotus was not permitted to see the downstairs.
I have two thoughts on the possible purpose of the Labyrinth. Perhaps it was built by Joseph to store grain: this explains the large size of the rooms. The grain was brought to the "Labyrinth" by boat and taken away by boat. One day excavations will
However, it is clear that the "dowstairs" is and always was below the ground-water level. This means it would not be permitteda good place to store grain... the grain would likely go mouldy. Another possibility is the lower levels were built as mausolium, a burial place for the administrators of the royal administration. It has already been noted that during the reign of Senusert III and into somethe reign of Amenemhat III the rooms undercentral administration greatly increased in size, recruiting staff from the sand: what I expect willregional nome administrations. Some of the new administrators were members of the nomarcial ruling families, which took their burials very seriously. It may be found isthat the pharaoh had the lower Labyrinth built as a few grainsmausolium as a perk of wheat in some roomsthe job and barley in other roomsas a solution to one of the concerns of the nomarcial families upon joining the royal administration .... that they might not have a decent burial.