41. Plotted from ANARE ( Australian National Antarctic Research Expeditions ) air photos taken in 1956 and 1960. 42. Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition ( 1936 37 ). 43. Delineated from air photos taken by U . S . Navy Operation Highjump ( 1946 47 ). 44. Plotted from air photos taken by ANARE ( Australian National Antarctic Research Expeditions ) aircraft in 1956. 45. Plotted from air photos taken from ANARE ( Australian National Antarctic Research Expeditions ) aircraft in 1957. 46. First mapped from air photos taken by U . S . Navy Operation Highjump in February 1947. 47. Plotted from air photos taken from Australian National Antarctic Research Expeditions ( ANARE ) aircraft in 1956. 48. Plotted from air photos taken from ANARE ( Australian National Antarctic Research Expeditions ) aircraft in 1956. 49. Plotted from air photos taken by ANARE ( Australian National Antarctic Research Expeditions ) in November 1956. 50. It was mapped by United States Geological Survey ( USGS ) from ground surveys and Navy air photos .