I just rewatched the Atlantis premeire. And in the opening shot they show the girl who was found frozen in antarctica back when she was alive in the time of the Ancients. They show her looking over the base in antarctica.
And here is the prt I didnt get the first few times... blame it on my airheadedness.... When that "ship" took off, it was the whole Atlantis city that the Stargate team found in the Pegasus galaxy. The City took off leaving only a tiny core piece behind.
