With the Urianians, the country entered the iron age. Iron is found sparsely in Suraetuan settlements as well, but the Urianians used and extracted it regularly. Urianian settlements are identifiable from their rectangular timber houses, the oldest ones dated 6th century BCE, but another set of settlements using round wicker houses, found in the east and southeast, may also be Urianian. The oldest ones of these are from the 8th century BCE, and they yield a sparse crop of iron artifacts. By the 5th century, urianian settlements appear throughout the main isle. The rapidness of the settling process seems to indicate a military conquest.
Copper sale remained a chief source of wealth for the Urianians, and an urban sized settlement grew up at Tinauros, the former Tnary, with Romoreiweza as its trade station, the former Taywa. Inside the former Olgidoj-realm in the south, another major settlement emerged, named Olgidor.
In legendary tales, the kings of Tinauros tried to exert authority over the whole island, but failed. Thereafter, for all of the known Urianian iron age history, political power lay in the hands of local lords, called ronze, whose decendants are the ranzi of today. The tradition of their regular meetings at the ronzomentila, today's ranzmindul, to decide intertribal matters starts already in the 4th century BCE, if not earlier.
The last centuries before the Current Era represent the highest flowering of the Urianian culture, with monumental architecture, great poetry preserved in writing, and famous sea journeys.