Complex sentence: First charted by the Swedish Antarctic Expedition under Otto Nordenskiöld, 1901-04, it was surveyed in 1945 and 1955 by the Falkland Islands Dependencies Survey, who applied the name.
Split into simpler sentences: First charted by the Swedish Antarctic Expedition under Nordenskjold, 1901-04. Surveyed in 1945 and 1955 by Falkland Islands Dependencies Survey (FIDS), who applied the name.