YAKUSHIMA`S VOLCANIC ORIGINS
Modern day Yakushima was most recently impacted on due to a huge volcanic eruption on the ocean floor around 6300 years ago. The Kikai Caldera, located 40km north-west of Yakushima, was the cause of the eruption that created large volumes of debris via pyroclastic flow that covered much of the region, including parts of mainland Japan. It is estimated to have been around 150 cubic kilometers of volcanic products.
Sakurajima Eruption of February 1914
Sakurajima was until 1914 a volcanic island in the middle of Kagoshima Harbour. Once the dust settled so to speak, it became a peninsula directly connected to the Kyushu mainland on the eastern side of the bay.