Guishan Island or Steep Island or Turtle Island (Chinese: 龜山島; Hanyu Pinyin: Guīshāndǎo; Tongyong Pinyin: Gueishandǎo; Wade–Giles: Kuei¹-shan¹-tao³; literally: "Turtle Mountain Island"), also known as Kueishan Island, is an island in the Pacific Ocean currently administered under Toucheng Township, Yilan County, Taiwan and located 9.1 km (5.7 mi) east of port of Gengfang Fishery Harbor. The island is the top of an andesite stratovolcano which rises from the seafloor. It is the only active volcano in Taiwan, displaying active fumaroles and solfataras.