This is interesting too - "An expedition led by Maurice Vidal Portman, a government administrator who hoped to research the natives and their customs, accomplished a successful landing on North Sentinel Island in January 1880. The group found a network of pathways and several small, abandoned villages. After several days, six Sentinelese were captured and taken to Port Blair. They soon became sick, and two of them died. The other four were returned to the island." - http://en.wikipedia.org/wiki/North_Sentinel_Island