Fieri is a city in southwest Albania, in the district and county of the same name. Fier is 8 km (5 mi) from the ruins of the ancient Greek city of Apollonia. The history of Fier is bound up with that of the oil, gas and bitumen deposits nearby. The presence of asphalt and burning escapes of natural gas in the vicinity was recorded as early as the 1st century AD. Dioscorides, in Materia Medica, describes lumps of bitumen in the adjacent river Seman, and the concentrated pitch on the banks of the Vjosë river Strabo, writing in about AD 17 states.