the Rani ki Vav step-well has a floor that shouldn't be there

Rani ki Vav in Patan was buried under silt for like 700 years until ASI excavated it in the 70s-80s. UNESCO site now, everybody posts pretty instagram photos of the sculpted walls. what I haven't seen discussed anywhere: the lowest level. the seventh step down. the structure goes deeper than the 'of……