Guishan Island, Taiwan.

Guishan Island is an island in the Pacific Ocean currently administered by Yilan County, Taiwan and located 9.1 km 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. It has an area of 2.841 square kilometres (1.097 sq mi), and the highest point reaches 401 m (1,316 ft) above sea level.

The local population, consisting mainly of fishermen, was relocated in 1977 due to the hardships associated with living on the island. Between 1977 and 2000 it became the site of a military base, and currently it is managed as a tourist destination and natural conservation area. There are restrictions for visitors due to environmental protection.