Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Chaco Culture' has mentioned 'National park' in the following places:
Occurrence Sentence Text Source
U.S. national park in New Mexico
It urged the creation of a national park to safeguard Chacoan sites.
The inclusion of Chaco Canyon and Aztec Ruins in the National Park system gives them the highest possible level of protection, and assures them a high standard of interpretation and public access.