More serious conflicts took place in the Illyrian land, where complaints were constantly made as to the turbulent Dalmatians by their neighbours and those who navigated the Adriatic; and along the wholly exposed northern frontier of Macedonia, which, according to the significant expression of a Roman, extended as far as the Roman swords and spears reached, the conflicts with the barbarians never ceased. In 619 an expedition was undertaken against the Ardyaei or Vardaei and the Pleraei or Paralii, a Dalmatian tribe on the coast to the north of the mouth of the Narenta, which was incessantly perpetrating outrages on the sea and on the opposite coast: by order of the Romans they removed from the coast and settled in the interior, the modern Herzegovina, where they began to cultivate the soil, but, unused to their new calling, pined away in that inclement region. At the same time an attack was directed from Macedonia against the Scordisci, who had, it may be presumed, made common cause with the assailed inhabitants of the coast. Soon afterwards (625) the consul Tuditanus in connection with the able Decimus Brutus, the conqueror of the Spanish Callaeci, humbled the Japydes, and, after sustaining a defeat at the outset, at length carried the Roman arms into the heart of Dalmatia as far as the river Kerka, 115 miles distant from Aquileia; the Japydes thenceforth appear as a nation at peace and on friendly terms with Rome. But ten years later (635) the Dalmatians rose afresh, once more in concert with the Scordisci. While the consul Lucius Cotta fought against the latter and in doing so advanced apparently as far as Segestica, his colleague Lucius Metellus afterwards named Dalmaticus, the elder brother of the conqueror of Numidia, marched against the Dalmatians, conquered them and passed the winter in Salona (Spalato), which town henceforth appears as the chief stronghold of the Romans in that region. It is not improbable that the construction of the Via Gabinia, which led from Salona in an easterly direction to Andetrium (near Much) and thence farther into the interior, falls within this period. The Romans Cross the Eastern Alps and Reach the Danube