Dark & Light cave in Lan Ha Bay. Located in Cat Ba's biosphere reserve, bordered by Ha Long Bay and Lan Ha Bay, Sang Dark Cave is an ideal place for those who enjoy kayaking and exploring nature.

Overview of Dark & Light cave

If you want to come here, you have to move from Ha Long Bay to Lan Ha Bay and visit the morning and evening cave. This is a form of a cave with a deep cave under the water cave, the ceiling is facing up. According to studies, the cave system here is divided into 3 different types of cave which are ancient cave, ancient Karst cave and frog cave.

To explore this cave, visitors have to kayak by themselves or sit on a bamboo boat. Weaving through the cliffs, through the cave entrance with the condition of the dry season, the water surface does not rise too high. Investigation of glacial water, sky high in feather cages, birds, gibbon song pouring down from above. Deep inside the cave, the stalactites continue to trickle down to create beautiful masterpieces.

Inside the cave with air when really fresh, is the shelter of the flock of refuge hiding during the day to go out to eat for the night. That is why Hang Sang and Dark Cave are also known as Bat Cave.Another world like opening before your eyes after kayaking through, a quiet lake, green trees covered with vertical cliffs makes the scenery become extraordinarily beautiful and majestic.

In addition to visiting Dark & Light Cave on a cruise overnight, guests have the opportunity to visit Van Boi fishing village. The special thing in this village is that they not only do business in Lan Ha but also are people who directly protect rare animals. Visitors have the opportunity to learn more about the history of the formation and long development of the undulating roofs of each wave.