Where is Son Doong Cave? Exact Location, How to Get There, and Latest Updates 2026

Son Doong Cave is located deep in the core zone of Phong Nha – Ke Bang, in Thuong Trach Commune, Quang Tri Province (formerly Quang Binh), near the Vietnam – Laos border area. This location is about 70 km northwest of Dong Hoi city center and is considered one of the most majestic and pristine karst landscape areas in Southeast Asia.

Geographic coordinates of the cave: 17°27′25″N – 106°17′15″E (equivalent to 17.45694°N, 106.2875°E). The cave belongs to the Phong Nha – Ke Bang cave system, a UNESCO World Natural Heritage Site recognized in 2003 and expanded in 2015 and 2025. With over 400 surveyed caves and a total length of over 220 km, Son Doong still holds the record as the world's largest natural cave according to Guinness World Records in 2013.

More than three decades since its discovery, Son Doong Cave has passed through many important milestones, from a chance discovery deep in the forest to a leading global adventure tourism icon. Below are key milestones in the history of discovery and research of this extraordinary cave.

• 1990–1991: Mr. Ho Khanh, a local resident, accidentally discovered the cave entrance while trekking through the jungle searching for agarwood and sheltering from the rain. However, the exact location was subsequently lost for many years.
• 2009: The British-Vietnamese Cave Expedition team led by Howard Limbert officially surveyed and announced the discovery to the world. Information about Son Doong Cave quickly appeared on National Geographic, attracting global attention.
• 2010: Completed mapping work, confirming a cave length of nearly 9 km along with the world's largest volume.
• 2013: Officially opened for controlled adventure tourism with a limited number of visitors per year.
• 2019–2023: Continued surveying the underground river system and researching the potential connection with Thung Cave, contributing to expanding scientific data on the cave's structure and volume.

As of 2026, more than 8,500 visitors have successfully conquered Son Doong, with Vietnamese tourists accounting for a high proportion, demonstrating the growing appeal of this journey to explore an extraordinary natural wonder.

Son Doong Cave makes a particularly strong impression thanks to its massive scale, rare in the world of natural caves:

• Length: Nearly 9 km.

• Highest cavern passage: About 200 m high, 150 m wide – enough space to accommodate a building around 40 stories high.

• Estimated volume: Approximately 36.8 million m³, equivalent to more than 15,000 Olympic-standard swimming pools.

With these dimensions, Son Doong surpassed the previous record held by Deer Cave in Gunung Mulu National Park, officially being recognized as the world's largest natural cave. Its magnificent scale and unique geological structure have made Son Doong one of the most impressive and magnificent natural wonders on the planet.

Tourists cannot visit Son Doong Cave independently and are required to book an official tour organized by Oxalis Adventure – the sole authorized operator. The entire journey is strictly controlled to ensure safety and preserve the cave ecosystem.

Step 1: Travel to Dong Hoi

The meeting point is Dong Hoi City (formerly part of Quang Binh).

• From Hanoi: Flight (approx. 1 hour), train (10–12 hours), or sleeper bus (9–10 hours).
• From Ho Chi Minh City: Flight (approx. 2 hours) or long-distance bus (20–24 hours).
• From Da Nang: Bus, private car (4–6 hours), or train.

Step 2: From Dong Hoi to Phong Nha

Oxalis provides free pickup at Dong Hoi Airport or Railway Station according to the tour departure schedule. Travel time to the Phong Nha area is about 1.5–2 hours by private transport.

Step 3: Start the Journey

The tour officially departs from the Oxalis office in Phong Nha tourism area, within Phong Nha – Ke Bang. From central Quang Tri, travel time to Phong Nha is quite convenient, taking about 1–2 hours by car.

Participating in an authorized tour not only ensures absolute safety but also provides visitors with a professional and well-structured experience when conquering the world's largest cave.

We hope this article has provided you with a better understanding of Son Doong Cave's location. Beyond the challenging exploration of Son Doong, the land of Quang Binh still boasts countless fascinating caves and beautiful natural landscapes waiting for you to explore. For more exciting choices for your journey to the "cave kingdom", you can refer to other outstanding Quang Binh Travel Tours on the Sovaba Travel website. Don't hesitate to call our hotline at 0934.733.223 to get detailed advice and support from the Sovaba Travel team in selecting and booking the most suitable tour for your memorable holiday in former Quang Binh!