Complex sentence: First surveyed in 1936 by the British Graham Land Expedition (BGLE) under Rymill, it was resurveyed in 1946 and 1948 by the Falkland Islands Dependencies Survey (FIDS).
Split into simpler sentences: First surveyed in 1936 by the British Graham Land Expedition (BGLE) under Rymill. Resurveyed in 1946 and 1948 by the Falkland Islands Dependencies Survey (FIDS).