In the history of the earth, the period from 565.438 billion years ago to 438 million years ago was Ordovician. As the main fossils of Ordovician strata, graptolites and conodonts are well developed and preserved in Huangnitang section of Changshan.

199865438+1October, the international geoscience union unanimously approved this profile as the first "golden nail profile" in China.

20011,Changshan National Geopark was successfully declared.

Since it was awarded the plaque by the Ministry of Land and Resources on February 2, 2002, the Changshan County Party Committee and the county government have successively invested 36.76 million yuan to build new facilities such as the Geopark Theme Monument and geological museum.