Xe Bang Fai Cave (Tham Xe Bang Fai) is one of the largest and most extraordinary river caves in the world, located in the remote limestone karst region of Khammouane Province, central Laos. Hidden within the vast Phou Hin Poun National Protected Area, this remarkable cave is renowned for its colossal dimensions, underground river system, spectacular rock formations, and untouched natural beauty. Although less visited than Konglor Cave, many cave explorers consider Xe Bang Fai Cave to be one of the most impressive cave systems in Southeast Asia.

The cave is carved by the Xe Bang Fai River, which flows directly through the mountain for approximately 6.5 kilometers before emerging on the other side. The entrance itself is breathtaking, measuring around 120 meters wide and over 200 meters high, creating one of the largest cave portals in the world. During the rainy season, the powerful river dramatically surges through the cave, while the dry season offers the best conditions for exploration.

Inside, visitors discover a vast underground world filled with enormous chambers, towering limestone formations, giant stalactites and stalagmites, flowstones, cave terraces, and underground beaches. Some chambers are so immense that they can accommodate large buildings inside them. The cave’s geological formations have developed over millions of years, creating an otherworldly landscape that fascinates geologists, photographers, and adventure travelers alike.

Unlike more accessible tourist caves, Xe Bang Fai Cave remains largely undeveloped and is primarily visited through guided adventure tours. Exploration often involves boat journeys, walking through cave chambers, and in some sections, wading through shallow water. The experience provides a genuine sense of discovery and wilderness that appeals to experienced adventurers and nature enthusiasts.

The cave is also ecologically significant, supporting unique cave ecosystems and diverse wildlife. Bats, cave-dwelling insects, and other specialized species inhabit the underground environment. The surrounding Phou Hin Poun National Protected Area contains rich biodiversity, including tropical forests, limestone mountains, and rare wildlife species.

In addition to its natural significance, the cave plays an important role for nearby local communities who have long depended on the river and surrounding environment. Visitors often pass through traditional villages where they can observe rural Lao life and learn about local customs.

Due to its remote location and adventure-oriented nature, Xe Bang Fai Cave is often visited as part of specialized eco-tourism and cave exploration expeditions. For travelers seeking one of Laos’ most extraordinary natural wonders beyond the typical tourist trail, Xe Bang Fai Cave offers an unforgettable experience.

Opening Hours

  • Daily: 08:00 AM – 05:00 PM (guided tours and local access)
  • Best time to visit:
    • November to April (dry season) for safer exploration.
    • December to February for comfortable temperatures.
  • Advance arrangements with local guides are strongly recommended.

Highlights

  • One of the world's largest river caves.
  • Massive cave entrance and enormous chambers.
  • Underground river adventure.
  • Spectacular stalactites and stalagmites.
  • Remote and less-visited natural wonder.
  • Located within Phou Hin Poun National Protected Area.
  • Rich biodiversity and cave ecosystems.
  • Exceptional destination for adventure travelers and photographers.

Visitor Tips

  • Visit with experienced local guides.
  • Wear sturdy footwear suitable for wet and uneven terrain.
  • Bring a headlamp or flashlight.
  • Protect electronics with waterproof bags.
  • Allow a full day for exploration.
  • Dry season offers the safest and most comfortable conditions.