Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Frontiers of the Roman Empire' has mentioned 'Fortification' in the following places:
Occurrence Sentence Text Source
The Antonine Wall, a 60xc2xa0km-long fortification in Scotland, was started by Emperor Antoninus Pius in AD 142 as a defense against the "Barbarians" of the north.
Some experts suggested that the Germanic limes may have been called Munimentum Traiani (Trajan's Bulwark) by contemporaries, referring to a passage by Ammianus Marcellinus, according to which emperor Julian had reoccupied this fortification in 360 AD.