Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Petroglyphic Complexes of the Mongolian Altai' has mentioned 'Petroglyphs' in the following places:
Occurrence Sentence Text Source
These three property components include large concentrations of petroglyphs and funerary and ritual monuments reflecting the development of human culture over a period of 12,000 years.
There are very few sites in North Asia that include pre-Bronze Age petroglyphs in such number, variety, and quality.
To preserve the integrity of the property, the potential impact of humans and their grazing animals on the petroglyphs requires strict control.
Management could also be better targeted if based on the results of a comprehensive survey and inventory of the petroglyphs in all three components of the property for their continued protection.