Changshan National Geopark

　　Changshan National Geopark covers an area of 46 square kilometers and is divided into four zones: Sanqu Mountain, Golden Spike, Qingshi, and Changshan Port, with the Golden Spike zone being its core area.

　　In Earth's history, the period from 490 million to 435 million years ago spans 55 million years known as the Ordovician System, which marks the first time the planet saw the richest biodiversity. The Huangnitang section in Changshan preserves the best development and fossil record of graptolites and conodonts — the primary fossil groups used to define the Ordovician time scale. In January 1998, the International Union of Geological Sciences unanimously approved this section as China’s first “Golden Spike” (Global Stratotype Section and Point).