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Native name:
Christian IV Ø
Nickname: Christian IV Island
Sammisoq in the bottom right.
Map of Sammisoq
Sammisoq is located in Greenland
Location of Sammisoq in Greenland
LocationIrminger Sea
Coordinates60°03′10″N 43°41′12″W / 60.05278°N 43.68667°W / 60.05278; -43.68667Coordinates: 60°03′10″N 43°41′12″W / 60.05278°N 43.68667°W / 60.05278; -43.68667
ArchipelagoNunap Isua Archipelago
Adjacent toNorth Atlantic Ocean
Area659 km2 (254 sq mi)
Area rank11th largest in Greenland
Length60 km (37 mi)
Highest elevation1,546 m (5072 ft)[1]
Highest pointNiaqornaq
Weather stationIkerasassuaq
Population0 (2021)
Pop. density0/km2 (0/sq mi)
Ethnic groupsnone

Sammisoq (old spelling Sangmissoq, Danish: Christian IV Ø; English traditional:Christian IV Island) is an island in the Kujalleq municipality in southern Greenland, located northeast of Uummannarsuaq cape. It is the largest island of the Cape Farewell Archipelago (Nunap Isua).


Its area is 659 square kilometres (254 square miles) and at its largest length is 60 kilometres (37 miles). It is separated from mainland Greenland to the north by the narrow Prince Christian Sound. The island has glaciers in the south and in the west. Its coast is deeply indented and its southern part is almost separated from the main island by two narrow inlets.[2] To the south lies Itilleq Island and to the west Annikitsoq, both part of the same group.[3]

There is one settlement, Ikerasassuaq, also called Prince Christian Sound, Prins Christian Sund, or Bluie East One. It is a weather station and has no permanent population.

Sammisoq is mountainous and Niaqornaq, its highest point, is 1546 m above sea level.[4][failed verification] It is an ultra prominent peak, meaning a journey to any higher mountain involves descending more than 1500 m down before going up again, in this case down to sea level.

See also[edit]


  • Prostar (1 January 2005). Prostar Sailing Directions 2005 Greenland and Iceland Enroute. ProStar Publications. ISBN 978-1-57785-753-2.