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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 mapped from surveys and air photos by the Sixth Norwegian Antarctic Expedition (1956–60) and named Fenristunga (Fenrir's tongue) in association with Fenriskjeften Mountain.
It was mapped and named from surveys and air photos by Norwegian Antarctic Expedition (1956–60) after Sigyn in Norse mythology.
Mapped from air photos and surveys by the Norwegian Antarctic Expedition, 1956–60; remapped by Soviet Antarctic Expedition, 1960–61, and named Skaly Vos'mogo Marta (March 8 Rocks) in recognition of International Women's Day.
Mapped from air photos and surveys by Norwegian Antarctic Expedition, 1956–60; remapped by Soviet Antarctic Expedition, 1960–61, and named presumedly after the river Vyatka.