Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Huanglong Scenic and Historic Interest Area' has mentioned 'Glaciation' in the following places:
Occurrence Sentence Text Source
Repeated glaciation events, the unique terrane structure, the formation of tufa, the stratum of carbonic acid rock, and climatic conditions such as Arctic-alpine sunlight have created this world-famous travertine landscape.