How do you get to Area 51 on Call of Duty Black Ops?

Answer 1

On the map moon you have to navigate up to the top floor of the lab and into the room where you can go into the biodome. But instead you can go outside onto the surface of the moon. Then you will see a little teleporter looking thing in the middle of it in a massive hole. When all of the players stand on the teleporter for a second or two, it will teleport you back to area51.