LEPROSY BONE

Located between Tadine and Penelo, this site is considered to be one of the largest drowned cavities in the world, with a 40-meter-deep shaft with a 30-meter diameter that leads to a lake of more than 350,000 m³ of fresh water. To find it, a guidebook can be useful but here is a procedure to follow for those who want to explore on their own: take the RP3 road that crosses the island between La Roche and Tadine; take the RM4 that leads north towards the villages of Ténane and Roh; the site is located two kilometers after the crossroad.