The historic landscape was a Greek royal house in its own right in ancient times and became a Roman province from 148 BC. Dodona, the most important ancient Greek oracle site after Delphi, is located here. Today, the area belongs to Greece and partly to Albania. Today, however, only the southern Greek part is called Epirus. The smallest, least populated and roughest Greek region extends in western Greece along the coast of the Ionian Sea in the south to the Ceraunian Mountains in the north. The highest elevation is Mount Smolikas at 2,637 metres. Only one fifth of Epirus is not mountainous and the soil is very calcareous. To the west, the mountains slope down to the coast of the Ionian Sea. The two wine-growing areas are Zitsa, which lies to the west of the capital Ioannina and is classified as POP, and Metsovo, which is unclassified and lies to the east of the capital. Close to the coast are the Ionian Islands.