What is "avaricum"

Avaricum was an oppidum in ancient Gaul, near what is now the city of Bourges. Avaricum, situated in the lands of the Bituriges, was the largest and best-fortified town within their territory, situated on very fertile lands. The terrain favored the oppidum, as it was flanked by a river and marshland, with only a single narrow entrance. By the time of the Roman conquest in 52 BC the city according to Julius Caesar had a population of 40,000 people.