Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Caves and Ice Age Art in the Swabian Jura' has mentioned 'Archaeological' in the following places:
Occurrence Sentence Text Source
The authenticity of the property is supported by the presence of stratified geological deposits in the caves that have served to protect the archaeological layers until their excavation and the surrounding landforms that contain the caves.
Systematic archaeological research has been undertaken at these sites for more than a century and documentation is ongoing.
The archaeological evidence gained from these excavations underpins the authenticity of the property.