Sanderd17, thanks for your comment. Yes it shouldn't be very difficult for someone living on the village, but I don't. What we are thinking now is that the best thing to do is to introduce OSM to some of the local activists living on the island. I've been there only once. As outsiders, the best we can do is trace satellite imagery and and as you know this has its issues. Also locals will know the names of everything on the island.
Thanks Shenirod for the link. The island has been like that on Google for ages, I don't think it will change. Greatest thing about OSM is that it looked like Google only few days ago and now it has more details. Hopefully will get more people involved and properly map the island.