One of the main routes connecting Rome and Dalmatia with the Danube was through Konjic. This route started from Narona (nowdays Metkovic), then across the Nevesinje field, Borci, Konjic, Ivan-Sedlo and Sarajevo field and led to Srebrenica and further to Singidunum, nowdays Belgrade.
On this busy road, at the point where the road crossed the Neretva River, where isnowdays Konjic, a large settlement was quickly created. The main part of the settlement at that time was located on the right coast of the Tresanica river. The remains of walls, Roman roof bricks and lime mortar were found in the area. Above the Konjic train station, on the slope of Repovica, at the end of the fourth century, there was a temple of the Sun God – Mitras. This shrine was buried with a large avalanche.
However, many items, when excavated in 1897, were found in relatively good condition. Then a stone altar was found in the temple with an inscription showing that it was erected by a certain Vaterius Lucius. A stone relief was also found with a picture of a Mithraist rite and part of a temple treasure chest with metal coins from the second, third and fourth centuries AD. The relief depicting the god Mitras is one of the most precious exhibits. He testifies that among native population, most of the Romanized Illyrians, were immigrants from the Far East (the cult of the god Mitras originated in Persia).
The first written records about this part of Europe, in whose the nearest vicinity will arise the town Konjic, left the Greek geographer Straben. He left us the record of the fight for the salty water spring between two Illyrian tribes – Ardiacs and Autariats – (from 360 until 480 B.C.). The inscription with the name of teh Roman Emperor Auguston a milestone, found at Podorasac, nearby Konjic, confirms that the Romans built roads here. One of the mains roads that connected Rome and Dalmatia with the Danube Basin went through the settlement where remained the traces of walls, Roman roof tiles and lime mortar, the settlement that will be later called Konjic.