 The name is derived from the fact that it is very long and from above it seems to divide that part of the city.This street is the lower ("Decumanus Inferiore") and southernmost of the three decumani, or east-west streets, of the grid of the original Greco-Roman city of "Neapolis".The central main "Decumanus Maggiore" is now "Via dei Tribunali"; while the northernmost or upper "Decumanus Superiore" is now "via Anticaglia" and "Via della Sapienza".