On my list:

For sure one of the most beautiful sites in Caledonia. Find Damas Bearune at the Kurin Tribal village to find out the conditions of access to Shabadran (pronounced "Chabadjane"). A 4x4 vehicle is the most convenient way to cross the first 7 km of coconut grove and then a hike of two good hours starts, interspersed with scents of the sea, sometimes over coral ledges (often sharp as a razor) and overlooking the deep blue of the sea that crashes onto a flat terraced coral platform below. The end of this adventurous path reveals Shabadran beach, inaccessible by boat, secret and inviolate. A spectacle, perhaps unique in the world, of blowholes and waves that burst into white stacks into natural terraced bowls. Be careful, do not approach the reef, as there is a risk of being sucked in and dragged out to sea. Be aware that this walk is not one of free public access.