Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Ngorongoro Conservation Area' has mentioned 'Tertiary' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| The crater, together with the Olmoti and Empakaai craters are part of the eastern Rift Valley, whose volcanism dates back to the late Mesozoic / early Tertiary periods and is famous for its geology. | UNESCO |