| 11. | Discovered and plotted from air photos by peak cirque ).
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| 12. | Mapped by ANARE ( Australian National Antarctic Research Expeditions ) from air photos, 1956-60.
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| 13. | Plotted from ANARE ( Australian National Antarctic Research Expeditions ) air photos of 1965.
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| 14. | A study of air photos has shown that there are two groups of rocks.
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| 15. | Mapped from air photos taken by U . S . Navy Operation Highjump, 1946-47.
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| 16. | Mapped by USGS from surveys and U . S . Navy air photos, 1964-68.
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| 17. | Mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition, 1936-37.
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| 18. | Discovered and plotted from air photos by peak ridge ).
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| 19. | Mapped by Norsk Polarinstitutt from surveys and air photos by Norwegian Antarctic Expedition, 1956-60.
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| 20. | Plotted from ANARE ( Australian National Antarctic Research Expeditions ) air photos taken in 1960.
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