Archeological evidence suggests humans may have first settled or visited the island circa 1600 BC. More permanent Amerindian settlement of Barbados dates to about the 4th to 7th centuries AD, by a group known as the Saladoid-Barrancoid. The two main groups were the Arawaks from South America, who became dominant around 800 – 1200 AD, and the more war-like Kalinago (Island Caribs) who arrived from South America in the 12th–13th centuries