At that juncture came Gondomar sallying out from the western gate, with fresh troops to reinforce the defenders of the vallum.
The bushes growing out of the sides of the vallum checked not his fall.
The fire having been appeased, the barbarians pushed up a tower against the vallum.
The vallum is lined by the velites, who are on guard all along it from day to day.
The attack is so sudden, that the merchants established under the vallum have not time to enter.
It consists of a stone wall, or murus, and a wall of earth, or vallum.
One end was furnished with wheels, the other with huge grappling-irons, which they strove to make fast in the vallum.
The Druid barrow, generally a broad and low tumulus, surrounded by a vallum.
The "vallum" as we now see it is obviously meant for defence against a southern foe.
But now there seems little doubt that the vallum was the ancient Roman road running inside the wall.