1. Where is Ruc Mon Cave? How to get there?

Ruc Mon Cave is located in Quang Binh (now part of Quang Tri), in the two communes of Kim Phu (formerly Trung Hoa) and Kim Dien (formerly Hoa Son). It lies deep within the mountains, right on the Vietnam-Laos border, and has two entrances.

To get to Ruc Mon Cave, you should join a guided tour that provides transportation. Starting from Dong Hoi, the tour will take you along National Road 12A, heading west for about 100 kilometers to reach Quy Dat Town. From there, the tour continues along the western branch of the Ho Chi Minh Trail for another 20 kilometers to reach Trung Hoa Commune, where a cave entrance is located. After that, you will go on a short trek to reach the cave.

2. Discovery and features of Ruc Mon Cave

According to the locals, no one knows exactly when the cave was formed. Ruc Mon Cave was discovered by Cao Ngoc Chuan, a member of the Chut ethnic group. A few years ago, people used to go to the cave to collect bat droppings for fertilizer and to catch fish from the underground streams. The fish, including species like eel and goby, were known for their delicious taste, but due to overfishing, they have mostly disappeared.

In 2017, Greenland Adventures received permission from the authorities to operate tours in the area. Around that time, the company also discovered a new section of the cave called the “fog branch.” This area led to surprising finds, including shiny stone-like “pearls” and mysterious snake skeletons.

The cave stretches for nearly 2,900 meters, with ceilings reaching over 300 meters high. It features both dry and wet sections, and several underground rivers wind through its chambers. Exploring Ruc Mon Cave is physically demanding. Visitors must hike long distances, swim through cave entrances, cross rivers, and navigate underground streams with the help of ropes.

The cave’s name comes from the Ruc people, an ethnic group who once lived there. “Mon” means trace or sign, so “Ruc Mon” refers to the traces of the Ruc people who used to call this place home.

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3. Things to do during Ruc Mon Cave expeditions

3.1. Trek to the cave entrance

Before reaching the entrance of Ruc Mon Cave, you will go on a scenic trek of about 2 kilometers. The trail from Hoa Son is known to be challenging, but it rewards you with breathtaking views. Along the way, you will pass through the fields and farms of the local villagers and even stop for phototaking at the Yen Phu film set.

The trek takes you through a small village of the Chut ethnic group, where only 10 families live. Many of the porters who guide the cave tours come from this very village. The path to the cave winds alongside a clear stream, shaded by trees.

At times, you will walk across grass plains with sweeping views of the Hoa Son mountains in the distance. The mountain slopes seem to stretch endlessly to the riverbanks, creating a wild yet dreamy backdrop. After pushing through the journey with effort and excitement, you will finally arrive at the entrance of Ruc Mon Cave.

3.2. Explore stalactites and snake skeletons

Ruc Mon Cave feels like a giant museum of stalactites, with countless stone columns and drip formations carved by nature over thousands of years. Under the soft glow of headlamps, the shapes and textures sparkle and shift, creating a magical atmosphere.

One of the cave’s most fascinating spots is the snake skeleton area and Thach Nhu Foggy Mountain. This area is often covered in thick mist, adding to its mystical feel. The snake skeletons are located high near the cave ceiling, and you will need to climb within the cave itself to reach them. This makes the discovery even more thrilling for those up for the adventure.

3.3. Experience swimming, kayaking, and rope swinging

In the water-filled section of Ruc Mon Cave, you can take a refreshing dip in the cool water and enjoy a relaxing swim. In the dry section, you can admire the shimmering stalactites and take stunning photos of the cave’s otherworldly beauty.

For those who want more adventure, kayaking is also part of the experience. Paddling through the underground rivers adds a fun twist to the journey. If you are feeling brave, try rope swinging. This adrenaline-pumping activity lets you rappel from a height of 70 meters and drop into an underground lake.

3.4. Enjoy local specialties

One of the highlights of Ruc Mon Cave is the meals prepared by the porters, who not only guide you through the cave but also cook with incredible skills. After hours of exploring, sitting down to a hot meal in the middle of nature feels extra special. You will be treated to a variety of dishes, including fish caught in nearby waters, mountain shrimp, and cap nach pork. There will also be a colorful mix of seasonal vegetables and herbs. To top it off, everything is served with cham cheo, a traditional dipping sauce made from local spices that adds bold flavor to every bite.

Enjoy local specialties from Ruc Mon Cave

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4. Information about Ruc Mon Cave tours

4.1. Popular tours

Ruc Mon Expedition - Trung Hoa (1 Day)

Duration: 1 full day
Time: Starts around 7:30 AM - 8:00 AM and ends around 5:30 PM - 6:30 PM
Difficulty: Moderate
Group size: 2 - 20 pax
Minimum age: 12
Price: 1,750,000 VND per pax

Your journey begins bright and early, with pickup from your hotel in Phong Nha between 7:30 AM and 8:00 AM. At around 9:30 AM, you will arrive at Yen Phu Village, home to the Trung Hoa ethnic group. You will begin your trek through jungles, passing by ancient trees and listening to stories about the local life. After the hike, a delicious BBQ lunch prepared by the porters awaits.

Following lunch and a short rest, you will hike a final 350-meter rocky path through the forest to reach the cave entrance. Inside, you will descend an 80-meter-long stairs, with the option to jump from 5 meters high into an underground river. After that, you will continue the adventure by floating or swimming through roughly 1 kilometer of cool water.

Once you exit the cave, you will have time to dry off and enjoy some snacks and drinks before trekking back to the village. The return to Phong Nha is expected between 5:30 PM and 6:30 PM.

Ruc Mon Expedition - Hoa Son (1 Day)

Duration: 1 full day
Time: Starts around 7:30 AM - 8:00 AM and ends around 5:30 PM - 6:30 PM
Difficulty: Moderate
Group size: 2 - 20 pax
Minimum age: 12
Price: 2,550,000 VND per pax

Pick-up is between 7:30 AM and 8:00 AM, followed by a transfer to Greenland Adventures’ headquarters. There, you will get your gear ready, go over the itinerary, and receive a safety briefing. During this time, your guide will also share stories about the origins of Ruc Mon Cave and the culture of the Chut ethnic group.

Around 11:30 AM, you will walk along a river path until you arrive at the entrance of Ruc Mon Cave. After lunch, take a short rest, then gear up for the adventure ahead. The cave journey starts with a 2-kilometer swim through cool water. You will then climb over large rock formations, explore giant limestone structures, and make your way through a three-level dry section filled with glittering stalactites and mineral layers formed over millions of years.

At around 4:00 PM, your effort will be rewarded with cold drinks and tasty pastries, which are thoughtfully prepared by the porters. After the rest, you will hike back to the village and return to Phong Nha by bus, arriving between 5:30 PM and 6:30 PM.

Ruc Mon Cave Crossing Expedition (1 Day)

Duration: 1 full day
Time: Starts around 7:30 AM - 8:00 AM and ends around 5:30 PM - 6:30 PM
Difficulty: Moderate
Group size: 2 - 20 pax
Minimum age: 14
Price: 3,250,000 VND per pax

Your adventure kicks off with pick-up between 7:30 AM and 8:30 AM, followed by arrival at the tour headquarters for a quick prep session. You will be provided with essential gear, including long-sleeve tops, hiking sandals, refillable water bottles, gloves, and protective equipment.

Around 11:30 AM, you will trek along a quiet riverside trail to the cave entrance, where a BBQ lunch awaits. By 1:00 PM, the exploration begins. You will descend into the cave via two ladders (15m and 10m), fully harnessed and supervised by expert guides for safety.

From 1:30 PM to 2:30 PM, you will marvel at colossal limestone formations and climb through three dry section levels filled with minerals and stalactites. Inside this surreal landscape, your guide will reveal insights about the cave’s formation, the local culture, and the unique biodiversity found here.

From 2:30 PM to 3:30 PM, you will swim approximately 2 km through an underground river toward the “fog branch,” an area where mist constantly clings to the rock walls. From 3:30 PM to 4:30 PM, the group continues floating, swimming, and climbing toward the exit of the cave. Upon exiting, hot tea, coffee, and pastries are served to help you recharge before the final walk.

At 4:45 PM, begin your return trek through rivers and fields. Along the way, enjoy the breathtaking scenery and a picture-perfect sunset that caps off your expedition beautifully. The journey concludes with a transfer back to Phong Nha, arriving between 5:30 PM and 6:30 PM.

Ruc Mon Expedition (2 Days 1 Night)

Duration: 2 days 1 night
Time: Starts around 7:30 AM - 8:00 AM on Day 1 and ends around 5:30 PM - 6:30 PM on Day 2
Difficulty: Moderate
Group size: 2 - 20 pax
Minimum age: 12
Price: 5,150,000 VND per pax

Your journey begins between 7:30 AM and 8:00 AM with a transfer to Greenland Adventures for briefing. You will receive essential gear for the exploration. During the drive, your guide will share the history of Ruc Mon Cave and fascinating insights about the Chut ethnic group.

At around 9:30 AM, the group arrives at Tan Hoa Village. By 11:00 AM, after a peaceful riverside walk, you will reach the cave entrance. A BBQ lunch prepared by the porters awaits you here.

After a brief rest, you will gear up and begin the cave expedition: a 2-km swim through crystal-clear water, followed by climbing over rugged rock formations. Inside, you will explore three levels of the dry section, which is rich with shimmering minerals and towering stalactites.

In the evening, unwind with an overnight stay either inside the cave or at a local homestay. Dinner is freshly prepared by the support team, and you will have a chance to fully soak in the peace of nature and the hospitality of the locals.

4.2. Included essentials

Every Ruc Mon tour includes the following:

Meals and snacks
Long-sleeve clothing
Life jackets
Trekking sandals
Gloves
Professional porters
English-speaking tour guides
Towels
Helmets and headlamps
Drinking water
Dry bags
Tumblers
Transportation
First aid kits

4.3. Important notes

Always follow your guide closely to avoid getting lost. Reaching the cave involves trekking through forests and finding hidden paths only experienced guides know.
Do not rely on Google Maps or the likes for navigation. The path to Ruc Mon Cave has no clear signage or marked trails. Only your guide can safely lead you through the terrain.
The tour may be adjusted depending on weather conditions to ensure safety.
Double-check your tour information and ensure you fully understand the itinerary before booking.
Avoid bringing valuables such as expensive jewelry or large sums of cash.
Long-sleeve clothing is highly recommended due to thorny vegetation and insects.

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5.1. How is the weather inside Ruc Mon Cave?

During winter (mid-November - mid-February), temperatures inside Ruc Mon Cave can drop to 8°C - 18°C. In summer (June - August), it stays cool inside (22°C - 25°C) even when it is 32°C - 38°C outside.

5.2. Can I explore Ruc Mon Cave on my own?

No. Only authorized tours by Greenland Adventures are allowed in Ruc Mon Cave to protect the site and ensure visitor safety.

5.3. Are there any tours suitable for beginners?

Yes. Beginners can join the Ruc Mon Expedition - Trung Hoa (1 Day), which is great for first-timers.

5.4. Is there an age limit for Ruc Mon Cave tours?

The minimum age requirement for Ruc Mon Cave adventure is 12 or 14, depending on the tour.

5.5. What should I bring for the tour?

You should bring sunscreen, swimwear, sunglasses, insect repellent, and any medication you need. Wear comfortable clothes and sturdy shoes.

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Ruc Mon Cave offers a journey into nature and adventure. Pack your essentials, follow your guide, and get ready to explore one of Quang Binh’s most breathtaking wonders!

After your adventure at Ruc Mon Cave, why not continue your Vietnam travel with a mix of relaxation and discovery? Stay in the central region to explore the cultural charm of Hoi An and the coastal beauty of Da Nang. Head north to admire the limestone cliffs of Ha Long Bay. Or, go south to unwind on the golden beaches of Nha Trang and Phu Quoc.

For a seamless trip in Vietnam, consider staying at the hotels and resorts of Vinpearl. With beachfront accommodations and all-inclusive services, Vinpearl offers a perfect place to recharge. While you are there, don’t miss VinWonders, a series of world-class entertainment complexes full of thrilling games and mesmerizing shows.