Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Archaeological Site of Volubilis' has mentioned 'City walls' in the following places:
Occurrence Sentence Text Source
[16] They are concentrated outside the city walls, which suggests that Arab settlement remained distinct from the Berber settlement inside them.
[16][45] The Roman city walls stretch for 2.6xc2xa0km (1.6xc2xa0mi) and average 1.6xc2xa0m (5.2xc2xa0ft) thick.