Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Plitvice Lakes National Park' has mentioned 'Ice Age' in the following places:
Occurrence Sentence Text Source
These have only existed since the end of the ice age about 12,000 to 15,000 years ago, according to tufa radiocarbon datings.
[18] Since sedimentation only occurs under warm, humid climate conditions, these phenomena have only been occurring since the end of the last ice age.