Mulantou Lighthouse (Chinese: 木栏头灯塔), also known as the Hainan Head Light, located in the province of Hainan, China, is the fifth tallest lighthouse in the world, and the tallest in China. Built in 1995, this active lighthouse has a focal plane of 289 feet (88 m). It emits two white flashes every 15 seconds. The Mulantou Lighthouse is 237 feet (72 m) tall. It is located on a sharp promontory at the northeastern tip of the province, and marks the south side of the entrance to Qiongzhou Strait.