The Site is a rocky archipelago situated ten kilometres off the mainland coast of Greenland. It is composed of two main islands, Tupersuartuut and Thorstein Islænder, and several smaller islands and skerries. Because the archipelago is very exposed to the weather, vegetation can only be found in the most sheltered locations. The Site is a very important breeding area for birds, and it contains the southernmost breeding colony of the thick-billed murre in Greenland, and the country’s largest breeding numbers ofthe common guillemot. Furthermore, the Site supports other species during their breeding and moulting stages, such as the Atlantic puffin and the white-tailed eagle. Although they are in the open sea, their closeness to the mainland causes the islands to be surrounded by drift ice coming from east Greenland during spring and early summer. Sailing to the islands is difficult due to the drifting ice, so the Site is not disturbed by human activities such as hunting during the breeding season.