Kildin is a small Russian island in the Barents Sea, off the Russian shore and about 120 km from Norway. Administratively, Kildin belongs to the Murmansk Oblast of the Russian Federation. Kildin Island is a plateau, up to 900 feet in elevation; it drops sharply to the sea on the north. Great granite masses rise from the sea and are carved into broad terraces. …Kildin is a small Russian island in the Barents Sea, off the Russian shore and about 120 km from Norway. Administratively, Kildin belongs to the Murmansk Oblast of the Russian Federation. Kildin Island is a plateau, up to 900 feet in elevation; it drops sharply to the sea on the north. Great granite masses rise from the sea and are carved into broad terraces. In the interior there is a relict lake, Lake Mogil'noe, which is separated from Kildin Strait by an isthmus through which seawater filters that replenishes the lake. The brackish lake holds a unique species of cod that has adapted to it.