Bouvet Island of establishing a manned meteorological radio station, but a suitable location could not be found. By then both the flagpole and hut from the previous year had been washed away. The Third "Norvegia" Expedition, led by Hjalmar Riiser-Larsen, arrived the following year and built a new hut at Kapp Circoncision and on Larsøya. The expedition carried out aerial photography of the island and was the first Antarctic expedition to use aircraft. The "Dependency Act", passed by the Parliament of Norway on 27 February 1930, established Bouvet Island as a dependency, along with Peter I Island and Queen Maud Land. The
South American–Antarctic Ridge in the Mid- to Late Jurassic in what is today the Mozambique Basin east of Africa, whereas the South American and African plates started to brake apart during the Early Cretaceous. Between these events neither the Mid-Atlantic Ridge nor the Bouvet Triple Junction existed and the SAAR formed a continuous ridge together with the Southwest Indian Ridge. Around 106 Ma the eastern end of the Falkland Plateau separated from the Agulhas Bank, opening the South Atlantic which, however, remained an enclosed basin north of the Falkland Plateau until 85–83 Ma. Around 97 Ma the Northeast Georgia Rise (today north of