Bertrab Nunatak is a nunatak on the southern side of Lerchenfeld Glacier and about west-south-west of the Littlewood Nunataks. It has been described as "a bare rock about 1,739 feet high [that] forms the southern entrance point of the [Duke Ernst] Bay."Sailing Directions for Antarctica (1960). US Hydrographic Office, Pub. 27, 2nd edition, p. 312.
It was discovered by the Second German Antarctic Expedition, 1911–12, under Wilhelm Filchner, who named this feature for General .
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