Raptor Pen

The Raptor containment unit is was a huge reinforced cage on Isla Nublar  were the park's  Velociraptors  were held under maximum security. The Velociraptors originally had a Paddock on the island like any other animal, however their amazing jumping abilities cause a problem as they where constantly escaping their paddock. While their paddock is under construction this is their temporary paddock.

It was first seen at the beginning of the film  when the  Jurassic Park  security team were trying to get the alpha-female,  The Big One, into the pen, but a worker named  Jophery  is killed in the process.

The Containment Unit was seen again when on the tour by Alan Grant,  John Hammond ,  Ian Malcolm ,  Ellie Sattler  and  Donald Gennaro. Because of the construction on their paddock they had to find these animals on foot. They witnessed a 300 pound bull being lowered into the cage. The bull was quickly attacked and eaten by the three Raptors (the Big One and her two subordinates).

The Containment Unit was last see in the film when Robert Muldoon  and  Ellie Sattler  discovered that the electrical fencing around the pen had been broken through and that the three Raptors had escaped (see  Isla Nublar Incident ) after the fence's had been shut down.