Bright & Dark Cave

In the emerald embrace of Lan Ha Bay, Vietnam, hides the captivating Bright Cave. Kayaking through its cool, shadowed entrance, the sunlight streaming through cracks in the ceiling illuminates breathtaking rock formations. Step onto a hidden beach within, where tranquility reigns and nature’s artistry shines.

Where is the Bright cave

Bright & Dark Cave, also known as Hang Sáng or Hang Tối, is located in Lan Ha Bay, part of the Cat Ba Archipelago, an area adjacent to Ha Long Bay. The cave is situated near the border of Halong Bay, and Lan Ha Bay, close to Cat Ba National Park.

Kayaking in Bright cave.

What to see

Bright Cave is a two-part cave system consisting of a Dark cave and a Bright cave. The Dark Cave is about 100 meters long and is only accessible by kayak or small boat when the tide is low. Inside, the cave is dark and quiet, with only a few small openings that let in light. Unfortunately, the Dark Cave is not open for visiting till now because of safety reasons.

The Bright Cave is shorter than 80 meters and is accessible by kayak or local bamboo boat at any time of day. The cave is brightly lit by natural light streaming through openings in the ceiling, creating a beautiful and serene atmosphere.

The entrance to Bright Cave is formed by towering limestone cliffs, framing a serene lagoon bathed in sunlight. Lush greenery carpets the surrounding islets, adding to the picturesque charm.

Another cave in Halong Bay that has a similar formation to Bright Cave is Luon Cave, you also take a visit to this cave on the Halong Bay cruise package for both 1 night & night

Rowing bamboo boat in Bright cave.
Rowing bamboo boat in Bright Cave.

Kayaking & Bamboo boat to visit cave 

The most popular way to experience Bright Cave is to go kayaking or a local bamboo boat. Kayaking tours typically last for a few hours and include paddling through the cave and then getting into the lagoon inside.

You can even swim in the Bright Cave’s lagoon. The visit to Bright Cave is an experience included in the cruise package to Lan Ha Bay and Ha Long Bay


Kayaking in Bright cave.
Kayaking in Bright Cave.

How to visit

Many different cruise operators offer the trip to visit Bright Cave. You can choose a Lan Ha Bay day tour or overnight cruise, tours typically depart from either Ha Long Bay or Cat Ba Island.

On 3 day 2-night cruise with Bai Tho Junks, you will have the second day to explore Lan Ha Bay with a visit to Bright Cave and experience kayaking in this area.

Here are some additional details that you may find helpful:

  • The best time to visit Bright Cave is during the dry season, from November to April. But summer (May – Aug) offers you the best sunny weather for kayaking and swimming.
  • The entrance fee to Bright Cave is included in the price of a package tour, you do not need to pay extra.
  • Be sure to wear comfortable shoes and clothing that you don’t mind getting wet.
  • Bring sunscreen, a hat, and sunglasses.
  • It is also a good idea to bring a waterproof camera or phone case.
Bright cave.
Bright cave.