|Ocean/sea sources||Peabody Bay|
|Max. length||25 km (16 mi)|
|Max. width||5.5 km (3.4 mi)|
The Cass Fjord opens to the SW at the northern end of Peabody Bay, north of Cape Clay. Cass Fjord forms Washington Land's southeastern coastline and the facing shore is part of Daugaard-Jensen Land. The Washington Land shore is fringed by 180 m (590 ft) high cliffs, known as Poulsens Klint.