Enns (town) are used for agriculture. The municipality can be subdivided into the districts of Einsiedl, Enghagen, Enghagen am Tabor, Enns, Ental, Erlengraben, Hiesendorf, Kottingrat, Kristein, Kronau, Lorch, Moos, Rabenberg and Volkersdorf. The first settlements in the area of the mouth of the Enns river to the Danube date back to 4,000 years ago. Celts settled the land around 400 BC. Their kingdom of Noricum was incorporated into the Roman Empire in AD 15 and was designated as a Roman province under the reign of Emperor Claudius in AD 45. In the second and third century, the Roman camp of "Lauriacum", in
Nera Gorge-Beușnița National Park ("Zingel streber"), Balkan loach ("Cobitis elongata"), Kessler's gudgeon ("Gobio kessleri") or Amur bitterling ("Rhodeus sericeus amarus"). Nera Gorge-Beușnița National Park The Nera Gorge-Beușnița National Park () (national park category II IUCN) is a protected area situated in Romania, in Caraş-Severin County. The Natural Park is located at the south-west limit of the country, in the south of the Anina Mountains (group mountain included in Banat Mountains), in Caraș-Severin County, on the middle course of Nera River and on the upper Beu River. Nera Gorge-Beușnița National Park with an area of 36.758 ha was declared natural protected area by the "Law