Metalla was a Roman mining center located in the Iglesiente region of Sardinia entrusted to a procurator metallorum where were destined Christians and slaves condemned to forced labor. Mentioned in ancient sources, it hosted a thermal building with mosaic floors and a public clock. Here passed the last stretch of the road form Tibulas Sulcis up to Sulci. In the sources would be recognized in Sardiparias, the Sartiparias of the Ravenna Cosmography and the Sardopatoris Forum of Ptolemy.