

Coins from Bratislava bore inscriptions like Biatec and Nonnos. For example, the hill fort at Zemplín was a center of iron-working glass works were unearthed at Liptovská Mara and local coins were struck at Bratislava and Liptovská Mara. Some of the small hill forts which were built in the 1st century BC developed into important local economic and administrative centers. The Celts initially lived in tiny huts – 4 by 3 metres (13 ft × 10 ft) in size – which either formed small villages or were scattered across the countryside. New Celtic groups arrived from Northern Italy during the 2nd century BC. The local population was either subjected by the Celts or withdrew to the mountainous northern territory. Settlements of the La Tène culture indicate that the Celts colonized the lowlands along the river Danube and its tributaries. The first Celtic groups came from the West around 400 BC. The Celts were the first population in the territory of present-day Slovakia who can be identified on the basis of written sources.

The " Miracle of the Rain" depicted on the Column of Marcus Aurelius in Rome
