Xilutian Mine or "The Big Pit" in Fushun city, Liaoning, China, was once the largest open cast coal mine in the world. Now it settles for the title of largest in Asia. This mammoth hole in the ground has been in use since the 1914 when the area was developed industrially by briefly by the Japanese. Originally, electric trains hauled out the coal along miles of spiraling rail tracks. Today these have been replaced by dumper trucks. The hole is 6.6 kilometers from east to west, north to south it is 2 km wide, with a total area of 13.2 square kilometers. The vertical depth is 388 meters mining. The site opened in 1914 and continues in use to this day.