Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Nahanni National Park' has mentioned 'Cave' in the following places:
Occurrence Sentence Text Source
Nahanni National Park World Heritage property, located in Canadaxe2x80x99s Northwest Territories, is a 470,000 hectare undisturbed natural area of deep river canyons cutting through mountain ranges, with huge waterfalls and complex cave systems.
Criterion (vii): The South Nahanni River is one of the most spectacular wild rivers in North America, with deep canyons, huge waterfalls, and spectacular karst terrain, cave systems and hot springs.