Before you ask, this has nothing to with the TV show “Lost”. Gukanjima is an island 15 km from Nagasaki, Japan. From 1887 to 1974 is was used as a coal mining facility. Although only 1km in diameter it was densely populated with over 5300 people! It’s completely deserted now and entrance is prohibited. Check out the photos here. It really looks like a scene from a post-apocalyptic movie. There’s also some information here and on Wikipedia. Veeery creepy – no wonder it’s also called “The Ghost Island”.