I have been meaning to blog about Japan's abandoned Hashima Island. It's locally known as Gunkanjima - Battleship Island. Gunkanjima was a city built on an island 500 meters long by 160 meters wide not far from Nagasaki. It sat on top of the opening to a huge coal mine.
In 1959, Gunkanjima housed 139,100 people per square kilometer. This works out to almost 12,000 people in a space the size of two big supertankers. Wikipedia says this is the highest population density ever recorded and has a stunning photo taken from the sea. The island was abondoned to the elements in the 1970s when the mine closed.
Gunkanjima was an early inspiration to Japanese photographer Saiga Yuji. Here's a link to some incredible photos of an incredible place. (Mouse over the opening image to get a link to his English Site).
It is tempting to view this place as some sort of post-apocalyptic metaphor. Actually, the coal was replaced with cleaner, less expensive oil. And humanity advanced, away from Gunkanjima.