Nangan Beihai Tunnel

This is the tunnel where boats were moored during wars. Walking around here, you can feel that it is very cool inside the tunnel. Because it is in a tic-tac-toe shape, it is one-way. The opening hours are also uncertain due to the tides. You can take a boat or a canoe. It is hard to imagine that this was dug out by humans. There are many blue tears in the water. Every time the blue tears season comes, there will be many people here to see it. If you come to Nangan, you must come here to see it.