wow, i've been there in grande island for five months, that was year 2006, and for five months i heard a lot of humored about the treasures there, i've secretly site seeing the tunnels too and the place were there are tunnels underground,, it has many connecting tunnels there and some of the entrance of those tunnels are being close by the owner/manager of grande island and some of the entrance that is right in front of the resort are being use by guards as there post,, the security there is very strict and they always check (kap kap) as always when we are going out, but not so strict to visitors