412But when the haven was filled up to that depth, he enlarged that wall which was thus already extant above the sea, till it was two hundred feet wide; one hundred of which had buildings before it, in order to break the force of the waves, whence it was called Procumatia, or the first breaker of the waves; but the rest of the space was under a stone wall that ran round it. On this wall were very large towers, the principal and most beautiful of which was called Drusium, from Drusus, who was son-in-law to Caesar.