Vikings in Iberia
The first incursion of the Vikings in Iberia has been characterised as 'probably the most significant episode of the whole period of Viking activity in the South'. It is mentioned in "Annales Bertiniani", and dated August 844, when a group from a plundering expedition entered the Garonne and reached Galicia. Despite storm damage, some proceeded to South-West Spain. This account is consistent with several later, but independent sources in Latin and Arabic. In particular, the late ninth- or early tenth-century "Chronicle of Alfonso III" adds that after plundering a number of coastal villages they were ultimately repulsed in the vicinity of "Farum Brecantium" (i.e. the Tower of Hercules). Ramiro I of Asturias gathered troops in Galicia and Asturia for the counter-attack. After the Asturian victory, the Vikings continued their voyage in direction of Lisbon. While some authors consider that the reliability of this chronicle is open to doubt, others consider that other local chronicles confirm the arrival of the Norsemen.
Salme ships
According to an early interpretation offered by Jüri Peets, the lead archaeologist at the site, the ships and the dead are of Scandinavian origin. According to the most likely scenario, a war party of Scandinavians attempted to carry out a raid against the Oeselians (Estonian inhabitants of the island of Saaremaa), but were attacked by Oeselian ships. The sides of the two ships contain numerous embedded arrowheads, some of which are of the three-pointed type used to carry burning materials to set enemy ships aflame. After losing too many oarsmen to the Estonian archers, the raiders pulled their ships aground and tried to defend themselves behind them. It appears that after the battle, the Oeselians allowed either the survivors or some other group of Scandinavians to ritually bury their dead. The burial is unusual because the ships were not covered with earth mounds. The site was eventually forgotten by the local inhabitants after it had become overblown by sand and covered with vegetation. The raid-hypothesis has led to a questioning of when the Viking Age began exactly. The Salme event took place 50-100 years earlier than the infamous Lindisfarne Viking raid in England in the summer of AD 793.