NANG YUAN PINNACLE & CAVE   Max Depth: 21m   Ave Depth: 10m. The pinnacle has a deep crack in its mid section, that runs the entire way around. Inside this crack anything can be found. You'll spot species of fish, sleeping Trigger Fish, Giant Whiptail Rays, Giant Morays, and even Reef Sharks resting in the crack. Once you've been around, you head west to the Cave. Approximately 25 - 30 m in length, and high enough to be more than comfortable, this is the perfect place to sit and watch. Cleaner Shrimps manicure your nails, Pipe Fish all over the walls, and Crabs of every description scuttling around. Don't be surprised if you disturb a sleeping Whiptail Ray or two on your way in.