The Kaiser Franz Joseph Fjord has its mouth in the Foster Bay of the Greenland Sea, between Cape Mackenzie at the eastern end of Geographical Society Island and Cape Franklin, the southern end of the mainland's Gauss Peninsula; Bontekoe Island lies in the bay off its mouth.
The Devil's Castle (Teufelsschloss) is a prominent mountain of reddish rock with a lighter stripe extending diagonally across its face that stands close to the southern side of Cape Petersens, the NW extremity of Ymer Island.
Small and rocky Bjorne Island (Bjørneø) is located near the mouth of Geologfjord,[1] north of Cape Weber, the easternmost end of Andrée Land.
[4] Ättestupan is a cliff rising to a height of 1,300 m (4,300 ft) from the southern shore of Frænkel Land, on the northern side of Kaiser Franz Joseph Fjord.
[5] This fjord was first surveyed and partially explored by the Second German North Polar Expedition 1869–70 and named Kaiser Franz Joseph Fjord for Franz Joseph, Emperor of Austria-Hungary, who had made substantial donations to the expedition.