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Japan’s Abandoned Hashima Island Is Full Of Decay And Dark Secrets

Updated: Apr 13, 2022

About nine miles from the city of Nagasaki sits an abandoned island, void of inhabitants but steeped in history. Hashima Island, once a mecca for undersea coal mining, was a sharp representation of Japan‘s rapid industrialization. Also known as Gunkanjima (meaning Battleship Island) for its resemblance to a Japanese battleship, Hashima functioned as a coal facility from 1887 until 1974.

Once the coal reserves started depleting and petroleum began replacing coal, the mines shut down and the people left. After that, Hashima Island went ignored for nearly three decades. But as abandoned concrete walls crumbled and flora flourished, the dilapidated island caught the attention of those interested in the undisturbed historic ruins.

However, Hashima Island’s past isn’t that simple.

During World War II, the history of the island is darker as Japanese wartime mobilisation policies exploited enlisted Korean civilians and Chinese prisoners of war as forced labourers. Made to work under harsh conditions, it’s estimated that over 1,000 workers died on the island between the 1930s and the end of the war as a result of unsafe working conditions, malnutrition, and exhaustion.

As a tourist site, the island was named a United Nations Educational, Scientific and Cultural Organisation (UNESCO) World Heritage Historical Site in 2015 and groups of visitors can be taken on tours. However, despite the public’s infatuation, the island’s legacy remains an enigma. It’s unclear whether the focal point of the island should revolve around its part in Japan’s industrial revolution or as a reminder of the forced labourers who had to endure excruciating circumstances.

Hashima Island’s Industrial Rise And Fall

Coal was first discovered on the 16-acre island in the early 1800s. In an attempt to catch up with western colonial powers, Japan embarked on a period of rapid industrial development starting in the mid-1800s and utilised Hashima Island for the endeavour.

After Mitsubishi bought the island in 1890, the company consequently developed seawalls and began extracting coal as Japan’s first major undersea coal exploitation.

In 1916, a seven-floor apartment block (Japan’s first large reinforced concrete building) was built for the miners. To protect against typhoon damage, sturdy concrete was used to create apartment complexes, a school, and a hospital for the growing community.

While thriving as a coal mining facility, Hashima Island was home to thousands. In 1959, it reached its peak population of 5,259 residents.

In the 1960s, coal mines across the country began closing as petroleum became its number one replacement. In January 1974, Mitsubishi closed the Hashima mines for good.

Of course, when the operations ceased, the people left too. In just three months, the island cleared out. With nobody left to maintain the structures after the island was deserted, many of them collapsed and decayed into rubble over time.

Renewed Interest In Hashima Island

Even after the population dropped to zero, Mitsubishi maintained ownership of the island. In 2002, they transferred it to Takashima Town, which was absorbed by the city of Nagasaki in 2005.

After collapsed walls were restored, the island and its undisturbed housing complexes opened to tourists in 2009. The unique setup of the island, particularly the density of crammed buildings that have undergone weathering from corrosive seawater, has made it a popular destination.

Buildings built to maximise the limited space and light stand in Hashima Island or commonly called Gunkanjima.

“Accumulated reinforced concrete ruins do not seem to exist except Hashima,” researcher Takafumi Noguchi said, adding, “Concrete structures built in ancient Rome are the only competitor, but they do not contain reinforcing steel.”

Noguchi, along with a team of other researchers, began scaling the island in 2011 to see how the crumblings buildings could be saved.

Despite its booming tourist business and film appearances (including James Bond’s Skyfall), a vast majority of the island remains off-limits to visitors, as the massive investments needed to ensure the safety of the aged buildings would ultimately jeopardise the historical state of the property.

Controversay Over Gunkanjima’s Dark Past

The harrowing experiences of the slave laborers add an entirely different kind of eeriness to Hashima Island. After Japan colonized Korea and invaded China, they used recruited labor in the 1930s and 1940s to force thousands of people to work the mines.

Past workers have recounted their time with grim details, describing the conditions as grueling and inhumane. The weather was humid and food was scarce. If they slacked, they were beaten. Local records state that 123 Korean people and 15 Chinese people died on the island between 1925 and 1945.

While the initial bid to be included in the UNESCO’s list of World Heritage Sites covered the industrialisation feats of the island from the 1850s to 1910, it made no mention of the Korean and Chinese forced labourers.

Due to Hashima Island’s association with wartime slave labourers, South Korea formally objected to its bid for recognition.

At the WHC meeting in July 2015, Japan’s ambassador to UNESCO, Kuni Sato, acknowledged that “a large number of Koreans and others” were “forced to work under harsh conditions in the 1940s at some of the sites.” She also promised that an information centre would be set up explaining the history and circumstances of the labourers at the site.

Afterward, South Korea withdrew its opposition, and the site was subsequently approved for inclusion on the UNESCO World Heritage list. However, tension hasn’t dissipated entirely, as Japanese officials had repeatedly declined to use the term “forced labor” or refer to the Korean workers as “slaves.”

The history enclosed behind the seawalls of Hashima Island is a lot of things: rich, complex, devastating. One thing that is clear: the Japanese enclave is a testament to how, in an abandoned area, nature and industry interact.

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