Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Carlsbad Caverns National Park' has mentioned 'Oil' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| [8] Deep below the limestones are petroleum reserves (part of the Mid-Continent Oil Field). | WIKI |
| Outside pressure from oil, gas, and water extraction have the potential to impact cave and karst resources, as well as biological and even cultural resources of the park. | UNESCO |
| Oil and gas development, including their associated drilling and seismic activities have continued to expand around and towards the park. | UNESCO |
| Air quality monitoring of volatile organic compounds is used to determine threats from sources outside of the park, especially from adjacent oil and gas fields. | UNESCO |