Gunkandzhima - an island in the Pacific Ocean. Belongs to Japan. Gunkandzhima (Gunkanjima) in Japanese means "cruiser", so named because of the buildings, the island from the sea reminds warship.
At the western coast of Japan is dead island, which is hardly known even to the Japanese. For a long time the island was no more than a small reef.
In 1810, the accidental discovery of coal drastically changed the fate of the reef. Island settled around the same year. Construction began, and the coal industry through the reef began to expand continuously.
For 50 years he was the most densely populated places on earth - 5, 3 thousand people at a radius of about 1 km of the island. Reef turned into a man-made island.