Nearby fields were laid waste and what was not used burned. The stronghold of Numantia then was circumvallated with a ditch and palisade, behind which was a wall ten feet high. Towers were placed every hundred feet and mounted with catapults and ballistae. To blockade the nearby river, logs were placed in the water, moored by ropes on the shore. Knives and spear heads were embedded in the wood, which rotated in the strong current. Allied tribes were ordered to send reinforcements. Even Jugurtha, who later would revolt from Rome, himself, was sent from Numidia with twelve war elephants. The Roman forces now numbered 60,000 men and were arrayed around the besieged town in seven camps. The Numantines, "ready though they were to die, no opportunity was given them of fighting".