Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Phong Nha-Ke Bang National Park' has mentioned 'Ecosystem' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The park was created to protect one of the world's two largest karst regions with 300 caves and grottoes and also protects the ecosystem of limestone forest of the Annamite Range region in North Central Coast of Vietnam. | WIKI |