What is "glanum"

Glanum ( Hellenistic Γλανόν, as well as Glano, Calum, Clano, Clanum, Glanu, Glano) was an oppidum, or fortified town in present day Provence, founded by a Celto-Ligurian people called the Salyes in the 6th century BCE. It became officially a Roman city in 27 BCE and was abandoned in 260 AD. It is located on the flanks of the Alpilles, a range of mountains in the Bouches-du-Rhône département, about south of the modern city of Avignon, and a kilometre south of Saint-Rémy-de-Provence. It is particularly known for two well-preserved Roman monuments of the 1st century B.C., known as les Antiques, a mausoleum and a triumphal arch (the oldest in France).