In addition, the archaeological evidence indicates that in the 2nd century BC Celts expanded from Bohemia through the Kłodzko Valley into Silesia, now part of Poland and the Czech Republic.[4]Around 60 BC, a group of Boii joined the Helvetiis' ill-fated attempt to conquer land in western Gaul and were defeated by Julius Caesar, along with their allies, in the Battle of Bibracte.[17] Contrary to the interpretation of the classical writers, the Pannonian Boii attested in later sources are not simply the remnants of those who had fled from Italy, but rather another division of the tribe, which had settled there much earlier.The burial rites of the Italian Boii show many similarities with contemporary Bohemia, such as inhumation, which was uncommon with the other Cisalpine Gauls, or the absence of the typically western Celtic torcs.Later on, they attacked the city of Noreia (in modern Austria) shortly before a group of Boii (32,000 according to Julius Caesar) joined the Helvetii in their attempt to settle in western Gaul.Although attacked by Vercingetorix during one phase of the war, they supported him with two thousand troops at the battle of Alesia (Caesar, Commentarii de Bello Gallico, VII, 75).[21] However, the Boii had not been exterminated: There was a civitas Boiorum et Azaliorum (the Azalii being a neighbouring tribe) which was under the jurisdiction of a prefect of the Danube shore (praefectus ripae Danuvii).When, after the action had thus occurred, his own men returned to each general, Scipio could adopt no fixed plan of proceeding, except that he should form his measures from the plans and undertakings of the enemy: and Hannibal, uncertain whether he should pursue the march he had commenced into Italy, or fight with the Roman army which had first presented itself, the arrival of ambassadors from the Boii, and of a petty prince called Magalus, diverted from an immediate engagement; who, declaring that they would be the guides of his journey and the companions of his dangers, gave it as their opinion, that Italy ought to be attacked with the entire force of the war, his strength having been nowhere previously impaired.[24]In the first century BC, the Boii living in an oppidum of Bratislava minted Biatecs, high-quality coins with inscriptions (probably the names of kings) in Latin letters.