Rangko Cave ,The cave's darkness is diminished by the stalactites and stalagmites that catch the sunlight from the entrance, bathing everything in light. The best time to witness the cave in its sunlit grandeur is 1.30 to 3 p.m. local time. Batu Cermin, or Mirror Rock, is actually a tunnel or cave in a dark stone hills of Labuan Bajo, West Manggarai, Flores, East Nusa Tenggara. the unique of this cave ,Sunshine comes in through a hole in the tunnel and then bounces on the stone walls that again reflect small lights to other areas inside the cave like a mirror. That’s why this site is called mirror rock.