Dark and Bright Cave

Bright Cave - Dark Cave is located in the area bordering Lan Ha Bay and Halong Bay, in the protected area of the Biosphere Reserve of Cat Ba archipelago. This is an ideal destination for those who love kayaking, discovering nature when taking a cruise ship in Cat Ba.

Bright Cave - Dark Cave is regarded as the underwater Sung Sot Cave because the formation of the cave is not on the water like other caves. In the process of geological activity, there are 3 types of caves in Halong Bay formed from the impact of water to karst topography, which are remnants of old phreatic caves, old karstic foot caves, and marine notch caves. Bright Cave - Dark Cave belongs to the form of marine notch caves with the cave floor lying deep in the seawater, while the ceiling is on the water surface.

Bright Cave - Dark Cave

This is area belongs to Halong Bay, but it’s on the border of Halong Bay, Bai Tu Long Bay, and Lan Ha Bay. It’s far from the Surprise cave area around 2kms and will take 02 hours more.

The system of islets is really imposing. Just at the base of the islands, there is an arched entrance that leads to the grotto right at the water level. Passing through the natural entrance, visitors will see a tranquil round lake, surrounded by luxuriant trees and different sized stone walls.

There are weeping fig trees shading inside and many orchids hang their sweet-scented flowers. The Dark Cave is the long and dark one, which will require a torch to be handed for visitors beforehand. In contrast, the Bright Cave is short, and you can see the other bright side from this side. 

Bright - Dark Cave

With a kayak, visitors can get closer to the foot of the rocky mountain, discover the beauty of nature, the fun of water erosion at the foot of limestone, as well as the bravery of plants that survive in this rocky terrain.