Spain's little-known Viking history is being uncovered

Every year, on the first Sunday in August, the replica of an 11th-century Viking longboat sails up the river Ulla to the town of Catoira in northern Spain. The boat, manned by townsfolk disguised as Viking warriors, stages a ferocious onslaught on the town which is successfully fended off by the other residents in a tussle that ends up with both sides soaked not in blood, but wine.

After the battle, both victors