Asterix and The Great Crossing

Gaul was divided into three parts. No, four parts - for one small village of indomitable Gauls still held out against the Roman invaders. Asterix and Obelix are lost at sea and finally reach what they think is a Roman colony, but when the Vikings turn up on a voyage of discovery, they realise that they have, in fact, discovered a strange New World. Book 22 in the bestselling series.