Discussion of continental drift around Antarctica began nearly 100 years ago. While the Gondwana connections of Antarctica to Africa and Australia are well defined since decades, the relative pre-drift position of the Antarctic Peninsula to close-lying Patagonia continues to be subject of controversial opinions. Certainly older figures, which showed a paleo-position of the Peninsula crossing over continental crust of the Falkland Plateau or even South Africa or Patagonia, are out of consideration now. But contradictory opinions remain considering the relative paleo-position of the Peninsula as a more or less straight prolongation of the Patagonian Andes, or as lying parallel to Patagonia along the Pacific coast. Geological reasons are found for both opinions, but geophysical observations on the close-lying ocean floors, particularly the evolution of the Weddell Sea crust, speak for the last-mentioned reconstruction.