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
Thompson Island (South Atlantic) Thompson Island (South Atlantic) Thompson Island was a phantom island in the South Atlantic. According to the Global Volcanism Program, it was thought to be about north-northeast of Bouvet Island, a small Norwegian dependency between South Africa and Antarctica. The island was first reported and named by whaling ship captain George Norris in 1825. The last reported sighting was in 1893. When, however, the German survey ship "Valdivia" fixed the position of Bouvet in 1898, it then looked for Thompson, but did not find it. If Thompson ever existed, it is probable that it disappeared in a volcanic eruption sometime