Monica Rorison's thesis identifies and examines the vici of Aquitania, Lugdunensus and Belgia, dating from Caesar's victory at Alesia in 52 BC through to the Roman withdrawal in the early 5th century. The study combines a catalogue of sites, arranged geographically, with an overview of the definition, origins, development, structure and function of the settlements.Monica Rorison's thesis identifies and examines the vici of Aquitania, Lugdunensus and Belgia, dating from Caesar's victory at Alesia in 52 BC through to the Roman withdrawal in the early 5th century.