The chartered master recommended it here. It feels a bit like a blue hole, but the water here is not the kind of deep blue. There is only a little faint blue. It is also necessary to go through a short road to the water. The path is slippery. It is not recommended to wear flip-flops. The outside of the hole is surrounded by plants, but the hole is still quite big. It is not easy to find here, there is no clear road sign, you can find a parking lot near PK 28, and then walk by yourself.