Turtle Mountain Island, located 10 kilometers off the coast of Toucheng in Yilan County, Taiwan, looks like a turtle floating in the sea, hence its name. The island has high cliffs, steaming fumaroles, welling underwater hot springs, mountain peaks, sea-eroded caves, a lake, and unique cliff vegetation, as well as a rich marine ecology. Since the Ching Dynasty, Turtle Mountain Island has been famous for its runrises. The best place to watch this spectacular sunrise is from Toucheng Beach or the mouth of the Lanyang River, between April and September.