Caesar finished the campaign season by trying to take out the coastal tribes who had allied with the Veneti. However, they outmaneuvered the Romans. Due to superior knowledge of the local terrain, which was heavily forested and marshy, and a strategy of withdrawing there, they avoided battle with the Romans. Poor weather worsened the situation, and Caesar could do little more than raid the countryside. Realizing he would not meet the Gauls in battle, he withdrew for the winter. This was a setback for Caesar, as not pacifying the tribes would slow his campaigns the next year. The legions overwintered between the Saône and Loire rivers on the lands which he had conquered during the year. This was his punishment to the tribes for having fought against the Romans.