The island lies on the southern side of the entrance of
Kaiser Franz Joseph Fjord, with the
Antarctic Sound separating it from the
Suess Land Peninsula. Ymer Island's northern half forms a peninsula named Gunnar Anderson Land having its narrow isthmus in the west. The fjord between the two halves of the island is named
Dusen Fjord. Ymer Island has an area of 2,437 km2. It is mountainous;
Angelin Bjerg, its highest peak, reaches a height of 1900 m. Celsius Bjerg is located at the southeastern end of the island. The conspicuous
Devil's Castle (Teufelsschloss) is located on the other side of Kaiser Franz Joseph Fjord, off the southern shore of
Cape Petersens, the NW extremity of Ymer Island. ==See also==