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It was plotted from air photos by the Third German Antarctic Expedition (1938–39), mapped from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60), and because of its shape named Fenriskjeften (Fenrir's jaw), after the wolf in Norse mythology.
It was discovered by the Third German Antarctic Expedition under Ritscher, 1938–39, who named it in association with Humboldt Graben.