After Glaber besieged the slaves on the slopes of Mount Vesuvius, he failed to try to anticipate the next step of the rivals, he deduced that the rebels would descend the mountain from the same place they climbed, since it was the only pass, but using another of their unorthodox tactics, the Spartacus forces used ropes made from wild vines to descend the walls of the cliffs on the other side of the mountain. They then cornered Glaber platoons, annihilating his forces. Tactics still admired today by war strategists.
Roman records make no mention of Glaber after his defeat. It is not known whether Gaius Claudius Glaber was killed or if he was simply considered too obscure for future mentions by classical historians.