Bo Nau Cave, Ha Long cave was formed with frog-mouth shape. It has the width of about 200m2, yet is quite shallow. The ceiling of the cave was covered by many stalactites. There’s also cracks so lights can pass through it into the cave.
The cave becomes narrow at the end. It was surrounded by islands so inside the cave is bright with sunlight but still cool.
What makes the cave an attractive destination is three deities playing chess, two of them are playing and one is the referee.
Bo Nau is one of the beautiful caves of Ha Long Bay, therefore inspire many photographers when they come visit Halong!