Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Mammoth Cave National Park' has mentioned 'Hectares' in the following places:
Occurrence Sentence Text Source
With nearly 500 km of surveyed cave passageways within the property and over 21,000 hectares above ground, the property is large enough to offer a high level of protection to the outstanding universal value for which it was inscribed.
The 1996 expansion of the Mammoth Cave Area Biosphere Reserve to 367,993 hectares has also played an important role in securing the propertyxe2x80x99s integrity and maintaining water quality.