Places / Yên Phú
Rục Mòn cave
A small mouth hidden by trees, and nearly 3 km of river and formations behind it.
Transcript
From outside, Rục Mòn cave is just a cleft almost hidden by trees.
In front of it lies a jade-blue pool.
Inside, the cave runs about 2.9 kilometres, with ceilings over fifty metres high.
One branch is an underground river you swim through in the dark. The other is a dry gallery packed with formations.
The trail crosses rice fields, passes Yên Phú lake and fords a few streams. A full day, and a good night's sleep after.
From outside Rục Mòn looks like nothing: a cleft almost hidden by trees, reached by scrambling over boulders. In front lies a jade-blue pool you will want to jump into.
Inside, the cave runs about 2.9 km with ceilings over 50 m high. One branch is an underground river you swim through in the dark. The other is a dry gallery packed with formations, with skylights and a branch that is always misty.
The trail crosses the commune's rice fields and passes the Kong set at Yên Phú lake, fords a few streams, then goes up ladders and through squeezes inside the cave. A full day, and a good night's sleep after.
Rục Mòn is visited on tours with Greenland Adventures: a 1-day trip, a through-cave trip and a 2-day expedition camping in the cave, from US$74 per person.
Tours by Greenland Adventures
Prices from greenlandtour.com.vn, 10/2026- Rục Mòn Cave Exploration (1 day, through-cave, 2 days) · 1–2 days
- from 1,850,000 VND (~US$74)
- ~2,9 km
- cave length
- 50 m+
- ceiling height
- 2017
- first tours
Things to do
- Swim the underground river
- See the formations and skylights in the dry gallery
- Swim in the blue pool at the entrance
- Trek past rice fields and Yên Phú lake
Best season: Hot days, cool caves (June – August) →
Frequently asked
Where is Rục Mòn cave?
In Kim Phú commune, Quảng Trị province (formerly Minh Hóa district, Quảng Bình province), near Yên Phú lake, in the area where the Rục people once lived in caves.
How do I visit Rục Mòn?
On a tour with Greenland Adventures: 1-day trips from US$74 per person, plus a through-cave trip and a 2-day expedition camping in the cave. The route crosses farmland, passes Yên Phú lake and goes through the cave and its underground river. Book at greenlandtour.com.vn/en.
Do I need a permit?
No border-area permit is needed inside the Kim Phú tourism area, under Decision 2244/QĐ-UBND of the Quảng Trị Provincial People's Committee (12 June 2026). If you plan to go beyond the tourism area, ask the commune first.