Madauros was a Nimidian town that became a Roman colony by the end of the 1st century AD. As a colony of Roman veterans it was called Colonia Flavia Augusta Veteranorum Madaurensium.
From Schoder's lecture notes:
MADAUROS: Numidian town, Rom. colony 1 c. Schools famous; St. Aug. here began study.
b. Apuleius (Golden Ass)
Oil factory: chanbers for separating oil fr. water.