Day and Night Grotto
There are around 3000 islands and islets in Ha Long Bay, but the Day and Night grotto stands out for the mingling of a number of factors: the splendid mountain, the emerald green water and the floating clouds.
Day and Night grotto is not only known for the stunning limestone structure at every turn but also for the interesting natural habitat. On the cliff one still find traces of fossils of fresh-water snails, which prove that the cave was inhabited thousands of years ago. Monkeys run to and fro in groups, benjamin fig trees shade the landscape and many orchids hang their sweet-scented flowers.
Not many attractions are blessed with such a stunning beauty and diverse ecosystem as Ha Long Bay, and the Day and Night Grotto rightfully deserves as a an inevitable part of the Heritage site.