Before the Common Era , the area was part of the Celtic kingdom of Noricum .
Was within the area of influence of the oppidum of Burg in Schwarzenbach on the Burgberg , which was the main settlement of the northeast part of the kingdom .
Before the Common Era , the area was part of the Celtic kingdom of Noricum and was within the area of influence of the oppidum of Burg in Schwarzenbach on the Burgberg , which was the main settlement of the northeast part of the kingdom .