Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Pergamon and its Multi-Layered Cultural Landscape' has mentioned 'Valley' in the following places:
Occurrence Sentence Text Source
The Caicus valley is mostly composed of volcanic rock, particularly andesite and the Pergamon massif is also an intrusive stock of andesite.
Their significance for architectural history lies in the form of the last kilometres from the mountains through a 200-metre-deep (660xc2xa0ft) valley to the Akropolis.
The pipe consisted of three channels, which ended 3xc2xa0km north of the citadel, before reaching the valley, and emptied into a pool, which included a double sedimentation tank.
The water was able to cross the valley between the pool and the citadel with the help of this pressurised conduit.
Three kilometres (1.9 miles) south of the Acropolis at (39xc2xb0 7xe2x80xb2 9xe2x80xb3 N, 27xc2xb0 9xe2x80xb2 56xe2x80xb3 E), down in the valley, there was the Sanctuary of Asclepius (also known as the Asclepium), the god of healing.