The inner fjord branches were mapped and named by Lauge Koch in the course of aerial surveys from the 1920s onwards.

The Nordpasset is a glacial valley that extends a further 25 km (16 mi) in a WNW direction until the head of O.B.

[6] Frigg Fjord is an offshoot on the northern shore located 95 km (59 mi) from the mouth.

Hans Egede Land extends to the south of the fjord from its middle reaches to the mouth area.

The 1,280 m (4,200 ft) high Nordkrone plateau is located on the southern side of Frederick E. Hyde Fjord.