Taroko national park
Taroko National Park is one of the nine national parks in Taiwan and was named after the Taroko Gorge, the landmark gorge of the park carved by the Liwu River. The park spans Taichung Municipality, Nantou County, and Hualien County. Taroko Gorge and its surrounding area are well known for their abundant supply of marble, leading to its nickname, "The Marble Gorge". The rock now seen in Taroko began over 200 million years ago as sediment on the bottom of the ocean. As the sediment collected, it was subject to increasingly large amounts of pressure which eventually hardened it into limestone. Over the past 100 million years, tectonic compression between the Philippine Sea Plate and the Eurasian Plate supplied additional pressure that metamorphosed the limestone into marble. Uplifting forces from the plate collision pushed this rock above the surface of the ocean to where we see it today. The region is still being uplifted by approximately 0.5 cm (half-centimeter) per year.