Discover the mystery in Conquer 4.5 km of Phong Nha Cave Tour


Phong Nha Cave is one of the typical caves of the Phong Nha - Ke Bang National Park Complex. This is the cave with the longest underground river system in the world with 14 km. The total length of Phong Nha Cave is 7,729 m, with the cave entrance 20-25m wide and 10m high. The cave includes 12 main caves and many connected sub-cave branches. Exploring Phong Nha Cave, you will admire the underground river, the system of stalactites and stalagmites with many shapes in the first 1 km. Besides the normal tour, there is also the Phong Nha adventure tour with 4.5 km.


Phong Nha 4.5 km tour is a unique experience for travelers who love adventure and exploration. Unlike a regular tour, this journey takes you deeper into the mysterious Phong Nha Cave, a place that hides mysteries and magnificent landscapes that few people have the opportunity to admire.

Conquer 4.5 km of Phong Nha Cave Tour highlight

Tourists will enjoy a 25-minute boat ride along the Son River to the cave entrance experiencing the tranquility of the villages along the river and witnessing the corn hills, rice fields, crop fields of Phong Nha.


The tour starts with kayaking, allowing visitors to paddle through the clear water and immerse themselves in the serene and cool atmosphere of the cave.


Next, visitors will have the opportunity to swim through the underground lake, where they can relax in the clear blue water and admire the sparkling stalactites reflecting on the lake surface.

Walking inside the cave, you can explore the hidden branches and admire the stalactites and stalagmites with magical shapes created by nature over millions of years.


Explore Bi Ki Cave to learn about the vestiges of the Cham people from thousands of years ago and discover its unique features, Champa culture through ancient characters, vases, and bowls left at Bi Ki Cave.

>>>Conquer 4.5 km of Phong Nha Cave here

 The mystical beauty in the 4.5 km Phong Nha Cave Tour

  •  The atmosphere here is serene, with only the sound of trickling water and the fluttering of bats' wings, creating a sense of both awe and curiosity.
  •  The landscape is breathtaking, with stalactites and stalagmites taking on unique shapes that shimmer magically under the flashlight.
  •  The ecosystem is diverse, with rare animals such as bats, cave spiders, and unique insects living in the caves.


  •  07:30 - 07:45: You will be picked up by our tour guides at your hotel in Dong Hoi and pick-up time in Phong Nha Village will be around 08:30 - 8:45.
  • The tour will start at the boat station which is located at the Phong Nha-Ke Bang Tourism Centre’s ticket office. You should have a big breakfast before the trip.
  • After a short introduction, participants will enter a tour van which will take them to another small dock located 10 minutes from the boat station and here they will use a boat to get to the mouth of the Phong Nha Cave.
  • The Phong Nha Cave is the most well-known cave inside the Phong Nha-Ke Bang National Park and the world’s largest wet cave! The subterranean river system can be followed all the way to what is supposedly the end of the cave 8 kilometers from the entrance. This amazing tour will take participants 4.5 kilometers deep inside the cave.
  • At the Phong Nha Cave’s boat station, every single participant will be equipped with the high-quality gear required for successfully exploring the Phong Nha Cave. After successfully gearing up and having checked all the equipment, the assigned tour guide will give you a short briefing about the cave and safety regulations. When everything is approved by the tour guide, it’s time to start the exciting day!
  • Depending on the size of the group the cave will be entered either by kayak or boat. On the way in, the first two zones of the Phong Nha cave will be passed: The entrance zone & twilight zone. The entrance zone is home to many different animals like birds, fish, snakes, and monkeys. Every animal that lives in the sunlight can seek shelter in the entrance zone of the cave. Not far from the mouth of the cave, the Twilight Zone starts. This is the zone in which the carefully placed artificial lighting system is installed. Grand stalagmite and stalactite formations are beautifully lit up by this system as it creates a spectacular ambiance. The twilight zone stretches for about 1.2 kilometers. After the last lamp in the Twilight Zone, the dark zone officially starts. This zone is not artificially lit or modified in any way (except for one or two ropes to safely guide visitors descending the slippery rocks).
  • After venturing approximately 500 meters into the dark zone the kayaks/boat will be left behind and participants will have to make their way over enormous boulders, narrow passages, and huge stalagmites & stalactites. It’s a game of climbing and descending while our tour guide provides a large amount of interesting information about the Phong Nha Cave. The first hundred meters often leave our visitors speechless, just being able to look at how enormous some of the formations are. It’s amazingly overwhelming!
  • After making it through the first kilometer of the dark zone a simple lunch will be served to regain some of the used-up energy. Next up, it’s time to enter the subterranean river once again, however, this time participants will have to swim. The temperature of the water is very pleasant and the view is once again spectacular. After swimming approximately 200 meters a sandy beach will be reached and from that point on it will be swimming and walking on the gorgeous beaches that can be found inside the cave. At one point the river current gets stronger and one of the tour guides will span a rope between one side of the river and the other to successfully get participants across.
  • After 2 - 4 hours the 4.5km point will be reached. Here the participants will be awarded certificates for successfully exploring the Phong Nha cave. After taking pictures with the certificates it’s time to head back to the kayaks/boats. However, the way back seems to be completely different. Although partly the same route will be walked viewing the cave from the other way is completely different. This is also caused by the fact that on the way back participants are usually more confident and now take the time to look up more than watch their step. Another great thing about the way back is that participants will be traveling downstream and the river will carry them down for the largest part of the way.
  • Back at the kayak/boat, there is time to relax and swim before slowly returning to the boat station. At this point, the tour is not over! The twilight zone will also be visited including the amazing Bi Ki chamber where the Cham people have left a thousand-year-old inscription. The Twilight Zone will be explored by foot and the artificial lighting system will create another entirely different caving experience. It’s almost like visiting two different caves on the same day.
  • The group goes back to the Centre’s ticket office and the tour ends at around 17:00 - 17:30 in Dong Hoi. 

Who is the 4.5 km Phong Nha tour designed for?

  •  Adventurous travelers: Challenge yourself with a demanding journey and explore the mysteries of the cave.
  •  Nature enthusiasts: Marvel at the stunning landscape and diverse ecosystem of Phong Nha. Unlike typical sightseeing tours, the 4.5 km tour offers a new and unforgettable experience. The atmosphere here is serene, with only the sound of trickling water and the fluttering of bats' wings, creating a sense of both awe and curiosity.

 Please take note of the following guidelines for participating in the tour

  •  Good health: The journey requires good physical strength and flexibility without cardiovascular diseases.
  •  Appropriate clothing: Bring comfortable clothes, swimsuits, a change of clothes, anti-slip and water-resistant shoes, waterproof bags, and towels.
  •  Follow instructions: Always follow the tour guide and adhere to safety regulations.
  • The tour departs with a minimum of 2 guests. If you are booking as a single guest, please contact us before making your booking and payment.

The Phong Nha 4.5 km tour is a challenging yet incredibly rewarding journey. Test your skills and uncover the mysteries hidden within the enigmatic Phong Nha cave. For further advice on cave exploration tours in Quang Binh, please get in touch with the Phongnha Discovery Team.


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