Thignica's stone ruins are called Aïn Tounga, located southwest of Testour, Tunisia.
Towards the centre of the ruins is a Byzantine fortress, trapezoidal in shape, flanked by five square towers.
Here an inscription makes mention of the proconsul Domitius Zenophilus (326-32), famous in the annals of Christian Africa.
Among the other ruins are a small triumphal arch, a temple, a Christian church, the remains of the enclosure, etc.,[1] as well as an amphitheatre.
Despite the splendour and importance of this town we know only one bishop, Aufidius, who assisted at the Conference of Carthage (411), where he had a Donatist rival.