Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Frontiers of the Roman Empire – The Lower German Limes' has mentioned 'River' in the following places:
Occurrence Sentence Text Source
The Lower Germanic Limes was not a fortified limes with ramparts, ditches, palisades or walls and watchtowers, but a river border (Lat.
The southernmost and smallest portion, between the Vinxtbach and the area around Bonn still belongs to the Rhenish Massif, through which the river passes in a relatively narrow valley between the heights of the Westerwald and the Eifel Mountains.
From roughly the area of Bonn, the Rhine valley opens into the Cologne Bay, which is bounded by the Bergisches Land, which hugs the river on the right-hand side, and the Eifel and High Fens to the southeast and east.
In the vicinity of the military camp of Novaesium, the Cologne Bay expands further into the Lower Rhine Plain, a river terrace landscape.