The Roman amphitheaters locally assume the term of "Parlascio", "Berlascio", "Verlascio", "Verlasce", "Perilascio". The only credible hypothesis is that of the Devoto who definitively clarifies that the term has a precise reference to its physical form deriving from a late Roman word borrowed from two terms of Greek origin. It would be the term of "perilasium" born from the fusion of the Greek terms perì (around) and elao (to turn). In other words, Belorasi would mean nothing more than "going around".

The term "Mons Belorasi" defines a place in medieval Salerno where a roman amphitheater existed in late antiquity. The term could not identify a mountain, but the site where the amphitheater "Berolasi" rises, This, according to the testimony of the medieval historian Erchemperto, should be equivalent to the amphitheater identified by scholars in the triangle composed of the current via Arce, via Vernieri and the Rafastia stream, also not far from Largo Plebiscito.

Erchemperto already used the term "Berelais" for the amphitheater of ancient Capua. In Salerno, "Mons Berelais" is also the linguistic trace of the rugged shape of the city, characterized in the upper part by slopes, jumps and small valleys, and is the place that can be reached with the steep staircase of the "salita delle Croci".

From the survey of the existing structures, not only its shape but also its size can be reconstructed with sufficient approximation. The ellipse that made up the outer perimeter had the largest diameter of about 110 meters and the smaller one of about 85 meters.

In Campania it was customary for gladiator games to be linked to funerary ceremonies. They took place on spaces not necessarily characterized by stable installations. Subsequently, towards the beginning of the 1st century BC, the temporary installations were replaced with masonry buildings that were placed on the outskirts of the city, and in direct contact with the territory from which most of the spectators obviously came.