Our adventure begins with a captivating visit to Hashima Island, also known as Gunkanjima. Situated just 20 kilometers from Nagasaki Port, this island boasts a captivating history. Once a thriving coal mine until 1974, Gunkanjima was home to over 5000 residents, all within its compact 480-meter length and 150-meter width. This unique setting led to an unparalleled population density, leaving an indelible mark on global history.