The archipelago is located on the southern side of Pikiulleq Bay.

It includes a long coastal island and a great number of offshore islets and rocks, the largest of which is Pros Mund Island.

The main island, Jens Munk Island is located north of the Fridtjof Nansen Peninsula, separated from the mainland by a 45 km long sound named Kagssortoq (Kattertooq), which has a width ranging between 0.7 and 6.5 km.

Jens Munk Island has an area of 470.7 km2 and a shoreline of 185.9 kilometres.

[2] Its southernmost point is Cape Lovelorn, projecting from a steep 280 m high headland at the northern limit of Umivik Bay.