Some 2-3 km southeast of Trong Mái Islet lies Bo Nâu Cave or Pelican Cave. This vaulted grotto covers 200 m2. The floor of the grotto is wide and flat, but not deep, and its wall features lots ofstalactites and stalagmites. At the entrance are three stones, looking like three fairies with their heads close to one another. Two men appear to be playing chess,with the third serving as a referee.