The Shulin area was once rich in coal mines, and to this day, many mine sites remain. The Gatangkeng coal mine, which has a history of over a hundred years, was the largest coal producer among all the mines in the Shanzi Foot area at that time. After the Japanese ruled Taiwan, they also saw the rich mineral resources and built the current Shanjia Station as a special station for coal transportation, until it was closed in 1959. The Gatangkeng coal mine, which has a history of over a hundred years, was renovated and reopened after a local enthusiast's restoration. The Gatangkeng coal mine was the largest coal producer among all the mines in the Shanzi Foot area at that time. After the Japanese took over Taiwan, they built the Shanzi Foot Station as a special station for transporting coal because of the coal resources of Gatangkeng. At its peak, the number of people in Gatangkeng exceeded 1,000.