Another enigma is the way how drainage for water flowing through the aqueducts worked.
The lowest level is perfectly drained and never gets flooded even after incessant rains.
It is suggested that there must be underground channels built by the depressions' bottom allowing water to drain.
We might never know why Moray was constructed, but the agricultural research station is a very likely possibility.
Sources:Wikipedia,Wikitravel,Machupicchu,Mofga
