underground
Area located beneath the arena, designed for easy access for prisoners, gladiators and animals.
elevator 
Device that used a counterweight system to raise the animals to arena level.
cage 
Barred cell used to lock up and transport animals.
cell 
Barred room in which prisoners condemned to take part in the games were held.
ramp 
Sloping passage used to reach another level.
trapdoor 
Lift-up door through which gladiators and animals entered the arena.
arena 
Sand-covered wooden floor on which gladiators fought.