Your information is useful, thanks. I read about Kumari Kandam theory but it is located south of Srilangka (Ceylon). However, you information that it could well be in Sundaland inspires me to learn more. Would you give me some more information? Note that Malay Peninsula is also part of Sundaland. I've read before about the origin of the Negrito people in some internet forums, as well as its scientific researches.