Lynn Island is located about 30 km (19 mi) from the mouth of the Dijmphna Sound where it bends in a NE/SW direction. At Cape Marie Dijmphna, the Hekla Sound branches to the NW separating the shore of Lynn Island from the southwestern shore of Holm Land to the north and —bending roughly southward— with the Skallingen shore in the Greenland mainland to the west, joining again the Dijmphna Sound. Meanwhile, the sound bends further southward west of Hovgaard Island until it meets the Spalte Glacier flowing from the Nioghalvfjerd Fjord in the southwest. Cape Adolf Jensen lies on the southeastern side of the southern mouth of the sound.[5]