Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Wachau Cultural Landscape' has mentioned 'Gorge' in the following places:
Occurrence Sentence Text Source
Its notoriety was due to the "robber barons" of Schloss Schonbuhel and Burg Agstein" who imprisoned their rivals for ransom and tied them to a rock ledge all the time threatening to kill them by throwing them into the gorge.