Southtrap Rock ({{coord|62|59|S|56|38|W|display=inline,title}}) is an isolated rock lying west of Cape Juncal, D'Urville Island, in the Joinville Island group. In association with Northern Rocks, so named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1963 because the rock is the southernmost of two groups of features which should be avoided by vessels entering Antarctic Sound from the north.

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