“…A very similar argument is presented by Mattingly, who observed that the Gebel Tarhuna includes the bestdocumented surviving traces of Roman olive farms in Tripolitania, even though the landscape and land-use had changed in the post-Roman period (Mattingly 1988c, 25). Oates (1954, 91) suggested that this change started from the fourth century AD, due to the marauding raids of pre-desert tribes such as the Austuriani, which caused a decline of the prosperous agricultural society of the first three centuries AD (Moderan 2003, 262 on Austuriani and p71 on defences).Some writers have claimed that the eastern Gebel lands were first opened up to intensive olive growing early in the first century AD (Grahame 1998). However, this claim was based on the fact that previous surveys had not been able to produce any proof that the farms discovered in the region had existed before the first century AD (Mattingly 1995, 140;Oates 1953, 110).…”