Qoornuup Qeqertarsua IslandQoornup Qeqertarsua Island is an uninhabited island in the Sermersooq municipality in southwestern Greenland.GeographyQoornup Qeqertarsua is one of three mountainous islands located in the middle run of the Nuup Kangerlua fjord, to the north of Nuuk, the capital of Greenland. It has a mountain. The two sibling islands are Qeqertarsuaq Island and Sermitsiaq Island.