On Castoriusovoj Tabuli Peutingeriani, there were caravan routes from which the important one goes through this valley to connect Pannonia in the north to Aegnatia at the south. U lower levels of the valley there were findings and lots of tombs, foundations, ... According to excavated articles from the middle age significant findings are discovered in Zabilje, Počulica, Kremenik, Gačice, Večeriska, Preočica, etc. During Big Migration in Europe, caused by the decay of Roman Empire, in this region the Slavs begin to come from nowadays Ukraine and Poland, and are organizing their first states. At nearby Bilino Polje (Zenica) the great Bosnian ruler Kulin Ban left the Charter of Ban Kulin, the oldest written document of all South Slavic states, 29 August 1189, written in Bosančica (Old Bosnian Alphabet). In the time of Ban Stjepan Kotromanić there was a census in which old Bosnia had seven counties.