Ellis Fjord is a long narrow fjord between Breidnes Peninsula

Breidnes Peninsula

Breidnes Peninsula is a rocky peninsula, long and wide, between Ellis Fjord and Langnes Fjord in the Vestfold Hills. It was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition and named Breidneset ....

 and Mule Peninsula

Mule Peninsula

Mule Peninsula is an irregular-shaped rocky peninsula between Ellis Fjord and Krok Fjord in the southern part of the Vestfold Hills. Mapped from air photos taken by the Lars Christensen Expedition and called Breidnesmulen by Norwegian cartographers...

 in the Vestfold Hills

Vestfold Hills

Vestfold Hills is an area of rounded rock coastal hills, in extent, located at the north side of Sorsdal Glacier on Ingrid Christensen Coast in Antarctica. The hills are subdivided by three west-trending peninsulas bounded by narrow fjords...

. Photographed by the Lars Christensen Expedition (1936–37), and plotted by Norwegian cartographers as a bay

Bay

A bay is an area of water mostly surrounded by land. Bays generally have calmer waters than the surrounding sea, due to the surrounding land blocking some waves and often reducing winds. Bays also exist as an inlet in a lake or pond. A large bay may be called a gulf, a sea, a sound, or a bight...

 and a remnant lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 which were called Mulvik (snout bay) and Langevatnet (the long lake) respectively. Analysis by John Roscoe

John Roscoe

John Roscoe was an Anglican missionary to East Africa. He conducted anthropological data collection of the Africans he encountered on mission.Roscoe was born in 1861, during the height of the Victorian era. Roscoe’s career heavily echoed the Victorian notion of improving natives under British...

 of air photos taken by U.S. Navy Operation Highjump (1946–47) showed these two features to be connected. The feature was renamed Ellis Fjord by Roscoe after Edwin E. Ellis, aerial photographer on U.S. Navy Operation Highjump flights over this area.