Recent studies have discovered that from as early as the IV century materials were taken away from the Colosseum, and that some drains were obstructed by the end of the same century.
At the beginning of the V century the water/drainage system, at least in the south western sector, had stopped working, as the lead piping and fountains had been removed.
Venantius' repairs of the arena simply meant dismantling the remaining colonnade and sliding the columns and pieces down in the underground of the arena and filling it up with earth.
In fact, when archaeologist Carlo Fea excavated the arena in 1810-14, he found three roads on top of each other, along the long axis.
The oldest one had been built where Venantius had filled up. Rosa started the main work on the oldest stratum of earth - dating back to Venantius' days - and found 70% of the columns of the upper portico, a quantity of inscriptions, the fittings of the , blocks of travertine and tuff, wooden beams and parts of the underground machinery.
A sea god who had the power to know all things past, present and future, Proteus was defiant and preferred to nap on the island of Pharos rather than prophesize.
To deter those seeking his insights, he would change his shape at will, and it’s said that the protea flower was named after him because it, too, presents itself in an astounding variety of shapes, sizes, hues and textures to make up more than 1,400 varieties.