Hashima Island (端島), commonly called Gunkanjima (軍艦島), is an abandoned island about 15 km from the centre of Nagasaki, Japan. It is one of 505 uninhabited islands in Nagasaki Prefecture. The island's most notable features are its abandoned concrete buildings, undisturbed except by nature, and the surrounding seawall. While the island is a symbol of the rapid industrialisation of Japan, it is also a reminder of Japanese war crimes as a site of forced labour prior to and during World War II.[1][2]
The 6.3 ha island was known for its undersea coal mines, established in 1887, which operated during the industrialisation of Japan. The island reached a peak population of 5,259 in 1959. In 1974, with the coal reserves nearing depletion, the mine was closed and all of the residents departed soon after, leaving the island effectively abandoned for the following three decades.
Interest in the island re-emerged in the 2000s on account of its undisturbed historic ruins, and it gradually became a tourist attraction. Certain collapsed exterior walls have since been restored, and travel to Hashima was reopened to tourists on 22 April 2009. Increasing interest in the island resulted in an initiative for its protection as a site of industrial heritage.
After much controversy, the island's coal mine was formally approved as a UNESCO World Heritage Site