 According to Aulus Hirtius in his addendum to Julius Caesar's "Commentaries on the Gallic War", the last revolt against Rome's authority in Gaul occurred here, and was brutally punished.The "Commentaries on the Gallic War" describe Uxellodunum as being strongly fortified by its natural position, with a river dividing the valley below that almost surrounded the steep craggy mountain on which the citadel was built.The name apparently means "high fort"; "dun" is a Celtic word for fort which is to be found in many place-names.