This conversion of earthwork into stone in the age of Severus can be paralleled from other parts of the Roman empire.
This pipe, called a penstock, ranged from forty-four inches down to two feet in diameter and paralleled the Uncompahgre River far above its torrent as it coursed down the deep gorge.
Imposing columns and pillars of ice were visible everywhere—massive icicles and mounds, built up from the spraying water tapped from the piping that paralleled the penstock.
Crop formation frequency, at least in England, has roughly paralleled sunspot numbers.
Thus it is no coincidence that gold as the standard bearer of capitalist ascendancy in circulation paralleled the real subsumption of labor in production.