Hang En Cave Adventure

The journey 2 days 1 night Hang En Adventure brings customers to the fairyland in the Hollywood movie (Pan: The Neverland 2015), and where ABC News made the live broadcast for Good Morning America program. Hang En cave is part of the famous Son Doong expedition tour.

Hang En Cave is one of the largest caves in the world, located in the core zone of Quang Binh’s cave kingdom, Phong Nha - Ke Bang National Park, Vietnam. Trekking tours to discover En Cave with Oxalis Adventure will bring visitors to an exciting night’s camping inside a majestic cave which is 3 million years old.

The cave was discovered and reported in 1994. Impressive images of this Vietnam cave quickly became well-known and attracted attention all over the world. Hang En was praised by the world's largest travel magazines such as National Geographic Magazine, The New York Times, and Lonely Planet. On November 26, 2023, Hang Son Doong, Hang En and Hang Va were featured on Episode 6 - EXTREMES of the famous documentary series Planet Earth III made by BBC.

The Hang En discovery tour is also a part of the world-famous Son Doong Expedition. On the first night of the Son Doong tour, the cave camp will be set up inside Hang En. Domestic and international travelers have high praise for the Hang En trekking tour in Quang Binh. Some even regard it as one of the most attractive adventure tours of Oxalis Adventure. The unique features of the trip are:

  • World's Most Unique Campsite: Hang En's campsite is located in the middle of the cave, where there is a cave entrance above. The floor is a wide sandy beach with a beautiful emerald lake, and a part of Rao Thuong river flowing through it. The cave camp receives light from the cave entrance. Particularly from December to the end of February, in sunny weather, sunbeams will shine deep into the cave campsite in the morning, brightening up the whole cave, and creating a spectacular scene.
  • Swim in the unique emerald coloured underground pool: The campsite has cool water flowing from an underground cave so the temperature of the water in the lake is about 17 to 25 Celsius degrees (63F - 77F). Warm in winter and cool in summer. Meanwhile, the water flowing next to the lake from the entrance brings warm water from the valley outside into the cave.
  • Giant cave: Hang En has a length of nearly 1.6 km. The Rao Thuong River passes through Hang En on its journey to Son Doong Cave. The cave has three entrances: the river entrance, the high main entrance and the large exit. At the campsite the width of the passage is around 200m, and the highest point in the ceiling is 140m. Hang En is currently one of the largest natural caves in the world.
  • Trekking through primeval jungle: Hang En is located in the core zone of Phong Nha - Ke Bang National Park, where there are ancient trees thousands of years old. On this adventure trek, 70% of the time visitors will walk under the shade of the primary forest.
  • Experience Doong Village: Visitors who join the Hang En caving tour will have a short stop in the Doong village of the Bru Van Kieu people. At this village, visitors can learn about the lifestyle and culture of the villagers; visit the village's school, stilt houses, and have lunch at one of the houses of the residents in the village.
    Learn more about Doong Village at: The History Of Ban Doong Village.

Note: Tour takes place in remote areas with complex terrains. Customers must be physically fit.

Please carefully read the tour itinerary and honestly fill out the booking information yourself, especially your experience and health condition.

To book a tour for a group, please send the tour information to them and instruct each member to complete the booking form on their own. Our booking system lets each person fill in their own information, avoiding errors or missing details when someone else does it for you. Read more about Oxalis Adventure Level.

EC2 trekking graph


The schedule of the Hang En Adventure 2 days 1 night camping and trekking tour may change due to weather conditions. The paths on this trekking tour can be quite muddy and slippery when it rains. Please scroll down to see booking information and Hang En Adventure tour price to explore the Hang En 2 days 1 night tour.

Download the itinerary


You need to come to Phong Nha before 7:00am on the morning of the cave adventure departure. Please avoid being late for the departure time of this adventure trip to Hang En.

On the morning of the departure, the car will come to pick you up at your hotel in Phong Nha from 7:30 to 8:00 am, and bring you to the Oxalis office. There you will listen to the safety briefing, sign the release form, pack your bag and receive the necessary safety equipment.

After departing from Oxalis Phong Nha office, the group starts with a jungle trek, hiking down a steep hill to reach a branch of the Rao Thuong Stream leading to the only village located in the core zone of Phong Nha - Ke Bang National Park.

After about 1 and a half hours of walking and wading through streams, the group will arrive at Doong Village - the home of the minority ethnic community living deep in the jungle. The group will stop for lunch at the village and learn about the life of the people here before continuing the trek to Hang En camp. Continuing walking through the jungle, crossing the river many times, the group will reach Hang En after about 3 hours. There everyone will be equipped with helmets, turn on the headlamps and start climbing the rocky section to explore the cave. Standing on the top of the rocky slope, you will see the entire Hang En Cave camp and the mesmerizing surrounding scenery. After receiving your tent, you can enjoy swimming in the turquoise lake next to the camp, before enjoying delicious food right in the cave. That’s the first camping day!


Oxalis offers free dorm room service with 6 comfortable beds for customers at Oxalis Home (Oxalis Office, Quang Binh). Guests arriving in Phong Nha early on the morning of the Oxalis Adventure tours departure day may rest a little before the start of the caving trip to Hang En. Please notify us in advance if you want to use the service.


After breakfast, the group continues, climbing up the rocks behind the camp in a cave, exploring and learning more interesting facts of nature's masterpiece in Quang Binh Province, and admiring the stalagmites and stalactites. At the back of the cave, a new view of the Hang En campsite opens up. Save some precious memories of this unique place.

After wading through the underground streams you will reach the large sandy floor of the gigantic cave exit. The group will return through the cave to the underground camp to have lunch and a short break. The group will then leave the cave, for the final challenge of wading through many streams and climbing a steep hill around 450m high. At the top of the hill is the road and a bus with cold beverages ready to welcome you back after all the challenges in your caving adventure to discover the wonderful Hang En.

The bus will take the group back to Phong Nha at about 18:00.

Suggested accommodations before and after the tour:
Chay Lap Farmstay is an ideal place to stay before and after joinging Oxalis cave tours. High quality rooms, swimming pool, spa, kayaking, cycling, yachting... Specially discount rate for Oxalis customers are 1 million VND/room for 2 people. Check availability here
chaylapfarmstay.com →

Weather and Climate

The area of Hang En - Phong Nha has 4 climate seasons in a year (spring, summer, autumn and winter). Due to the weather and to ensure the safety of visitors, especially in the rainy season, the Hang En tour only operates from December to mid-September every year and it is also the ideal time to explore Hang En and Quang Binh adventure tourism.

From January to March: The weather in the area can be quite cold, but there will be some warm sunny days.

April and May are the spring months, not too hot, when visitors will see many colorful blooming flowers.

June to August are the hot summer months, but most of the time visitors trek inside the cave and jungle, so it does not feel too bad. During the summer months, it will be really nice to swim inside the cave.

This is a camping trip inside one of the largest caves in Vietnam so visitors do not have to worry about rain or blazing sun during the overnight camp.

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Adventure level on tour

After many years of adventure tourism activities, Oxalis Adventure has created a Level of Adventure scale to help guests participating in Oxalis tours to visualize and choose the adventure tour most suitable for their fitness and health. This scale is not to be applied to other companies or tours with different conditions and terrains. The easiest level (level 1) anyone can join, and the most difficult level - 6 requires regular exercise and some trekking experience.

Adventure level: 3 - Moderate
The Hang En Adventure Tour is rated as Moderate (Level 3) on the Oxalis adventure level system. The difficulty of the tour is based on the physical fitness and health of average active people, not runners, athletes, or intensely active individuals.
Activities: Crossing rocky terrain, many ups and downs, hills and rivers

  • Trekking through 25km of mountain and river paths with rough terrain
  • 3km of caving
  • Multiple stream crossings
  • Elevation gain: 650m
  • Steep ascents and descents on forest paths
  • Availability schedule: December to mid-September; 3-4 trips/week (except from mid-December to late January: tours run daily)
  • Number of guests per tour: Up to 16 guests; Age 16-70 years old.
Adventure Level EC2 trekking graph

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Physical fitness requirements for Hang En Adventure Tour

The basic physical fitness requirements for participating in the Hang En Adventure Tour include:

  • Trekking experience requirements: Within the last 12 months, it is required to have trekking experience, at least one overnight camp trek, OR 2-3 day-treks with the following tour elements: trekking routes through forest/mountain/rocky/steep terrains, covering a minimum distance of 8km per day (equivalent to 5 miles per day), with an elevation gain of at least 300m.
  • Fitness Preparation: Engage in strenuous sports such as football, and skiing, or regularly participate in outdoor activities such as walking or running (3-4 times per week, covering 4-5 km each time) to maintain physical fitness. This ensures that they are able to:
    - Run continuously for 5 kilometres within 50 minutes.
    - Climb 5 floors continuously without becoming out of breath or dizzy.

Guests aged 16 to 70 are permitted to join the Hang En Adventure Tour, which demands good physical fitness and prior trekking experience. Those with experience in mountain trekking and good physical health, as well as those who engage in regular sports training, could easily complete this tour.

Some guests on the Hang En Adventure Tour may find it not particularly challenging, while others may encounter difficulties and require assistance from many safety assistants to complete the tour. The tour regulations allow safety experts and/or guides to temporarily suspend the journey, and escort guests out of the forest if significant difficulties are encountered on the itinerary. Refunds or rescheduling are not applicable in such cases.

For more information on the necessary physical activities for a successful trip, please refer to: https://oxalisadventure.com/getting-ready-oxalis-tour/.

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Safety on the tour

This is always the top priority of Oxalis Adventure to ensure the safety of both visitors and Oxalis’ staff on any trip, including one night adventures. We only use high-quality equipment meeting international standards, mainly imported from France, the UK, and Switzerland. The tour guides must undergo professional training and be tested for skills regularly. Only qualified guides may lead an Oxalis tour. Visitors can learn about the "safety management" and " safety equipment" that Oxalis uses here.

Travel safety tips

Any adventure activities will always contain risks and these must be carefully managed. Oxalis tours take place in remote locations without easy access to medical care. Hence a lot of work goes into managing and reducing risks to the lowest level possible. You can learn more about "Travel safety tip" here.

Preparation for the Hang En Cave Adventure

Hang En Cave Adventure has just one night camping in the cave, so the items you need to prepare are quite simple. However, with the 2-day 1-night camping and trekking tour visiting the cave and deep jungle, visitors will be required to prepare appropriate clothing and equipment to ensure safety and comfort.

You need to prepare

Essential clothing

  • Trekking clothes:
    - 1-2 quick-dry, bright, long-sleeved shirts
    - 1-2 pairs of quick-dry, long trekking pants
    - 1 waterproof jacket (winter months December to March)
  • Campsite clothing sets:
    - Warm clothes for winter from December to March
    - Shorts and T-shirts for summer from April to September
  • 1 pair of good gripping trekking shoes (drainable); *Waterproof/Gore Tex shoes are not recommended.
  • 1 medium size backpack (20L-25L) to carry stuff that you need while trekking
  • 2 pairs of calf-length, thick socks
  • 1 pair of sandals/slides using at the campsite
  • Personal dry bag/box for electronic devices
  • Swimwear using at the campsite

Personal items

  • Mosquito repellent
  • Sunglasses, sun hat, sunscreen
  • Hand fan for summer (April to August)
  • 1 medium towel
  • Underwear
  • Personal hygiene items (toothbrush, toothpaste, nature-friendly shampoo & soap, …)
  • Power banks
  • Personal medication
  • Antifungal foot powder
  • Passport

Oxalis provides

  • Camping equipment: tent, mattresses, pillow, sleeping bags
  • Caving and safety gears: helmet, headlight, gloves, …
  • Basic jungle boots (size 36-46 EU)
  • Water bottle (1L)
  • Water purifier
  • Compost toilet, toilet paper, hand cleaner
  • Semi-dry bag (15L) for campsite clothing sets and personal items
  • First-aid kit and medical rescue equipment
  • Satellite phone

Optional items

  • Arm cover if wearing short-sleeved T-shirts
  • Camera & Tripod
  • Ear plugs
  • Bandana or headband
  • Rehydration tablets
  • Blister prevention tape

Campsites inside the cave

Hang En has a length of 1.6 km and is one of the largest caves in the world in terms of volume. The campsite is located about 700m from the cave entrance, with a cave ceiling up to 140m high and 200m wide. Hang En campsite is very large, giving you lots of space to wander around. The unique features of Hang En campsite include:

A large campsite with fine sand and a turquoise lake where visitors can comfortably swim right in front of their tents.

On sunny days from December to February every year, visitors might enjoy the sight of sunbeams shining deep inside the cave and lighting up the cave, creating a rare majestic sight.

Hang En campsite is a place to watch the stars on clear sky nights, or the moon, as on full moon days, the moonbeams can shine deep into the camp.

From the campsite, sometimes visitors can see monkeys and langurs swinging on the vine on top of the cave entrance.

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Bathing at the campsite

Hang En campsite is located next to a natural lake inside the cave, the lake has a fine sandy beach and next to it is a stream that flows through. On summer days, the water at the lake is cool so that the guests can swim happily, while the water from the Rao Thuong Stream is somewhat warmer because it flows under the sun for a long time. For conservation reasons, shampoo and soap are not allowed to be used at the campsite. Visitors are advised to use dry shampoo if necessary.

Toilet at the campsite

The tour occurs in a remote jungle with no power or infrastructure and for conservation and hygiene Oxalis has created environmentally friendly toilets, called "Oxalis Composting Toilets".

The toilet consists of a normal toilet seat on top of a box. Inside the box, is a bucket and waste bag to collect all waste and toilet paper which is provided. Nearby is a container of rice husks. After finishing, cover the waste with a generous scoop of rice husks. This ensures a dry composting process, which does not smell, and covers the waste from insects.

When the buckets are full, the porters will change them and bury the waste in a designated location in the jungle. This will biodegrade and turn into fertilizer.

Visitors are required to use the composting toilets for both urination and defecation. Urination outside the toilet or inside the cave is not allowed because of the smell and impact on cave formations and the cave ecosystem.

Hand washing facilities are provided.

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Directions to Phong Nha

Phong Nha is located 45 km from Dong Hoi City, Quang Binh, Vietnam (about 40 minutes by car). From there you can book a shared or private transfer from Oxalis or rent a taxi to get to Chay Lap Farmstay resort.

* Visa: Vietnam provides visa exemption for citizens of ASEAN countries (30 days), and 45 days for citizens of (United Kingdom, Sweden, Denmark, Finland, Norway, France, Germany, Spain, Italy, Belarus, Russia).

* International airports: There are 3 main international airports for international flights: Tan Son Nhat International Airport (SGN), Noi Bai International airport (HAN) and Da Nang International Airport (DAD). From Ho Chi Minh City (Saigon) or Ha Noi, travellers can book domestic flights to Dong Hoi Airport (VDH). From Da Nang, traveler can catch a train or bus to Dong Hoi/Phong Nha.

  • Airplanes: There are many flights with Vietnam Airlines, Vietjet, Pacific Airlines, and Bamboo Airways, daily from Hanoi and Ho Chi Minh to Dong Hoi.
  • Trains: Many SE trains run daily from Hanoi and Ho Chi Minh City stopping at Dong Hoi Station.
  • Bus: There are many day or night buses from Hanoi, Da Nang, and Hue to Dong Hoi or Phong Nha daily.

You can see more details of “transportation to Phong Nha" here.

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Tour booking process

This is a caving tour that requires a lot of logistical preparation for both guests and Oxalis staff. Carefully reading the information about this overnight tour will help visitors make the best choices. The tour booking process includes the following steps:

  • Carefully read the Hang En Adventure tour program and assess your own fitness and health and decide if it is suitable for this trekking tour.
  • Check out the caving experience as well as the activities of camping and trekking to ensure the right activities they want to experience.
  • Check out the caving experience as well as the activities of camping and trekking to ensure the right activities they want to experience.
  • Fill in the booking information on the booking form page by yourself. The customers are advised to answer their fitness and health information truthfully.

After booking the tour, Oxalis staff will contact you within 48 hours to review your fitness profile and guide you onto the next steps. After 48 hours, if you haven’t received any contact from us, please call Oxalis directly or check the spam box in your email, in case the responding email from Oxalis is misplaced.

Once the booking is approved, customers will be asked to pay 100% of the tour price to confirm their booking.

During the preparation process, Oxalis staff will regularly contact you to help with your preparations. Customers can contact the Oxalis tour consultant to answer any questions if needed. 45 days prior to the camping and trekking trip, customers are requested to update their fitness and health information for the Oxalis staff in charge of the tour.

Turn into a timeline of the overview steps so that guests know what the whole process will look like.

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Tour price and available dates for booking

The cost of the Hang En Cave Adventure is 7,600,000 VND (~US$317) per person. Hang En Adventure is only open from December to mid-September every year. Hang En Adventure tours are open for sale on a fixed schedule and individuals can join by themselves or in a group. In addition, Oxalis also has a few private Hang En Cave Adventure tours for special groups or film crews. Please see the departure schedule in the calendar box below, the dates in bold are the dates available. If you do not see the calendar box appear, please wait a few seconds or press F5. The available dates in bold below are the first day of the schedule.

Starting from November 1st, 2024, the Hang En Cave Adventure tour will be priced at 8,000,000 VND (~US$334)/pax.

Terms of tour cancellation

Once the booking is approved, customers will be asked to pay 100% of the tour price to confirm their booking. Guests are entitled to cancel the trip 7 days prior to the departure date and will receive a full refund. For cancellation after 7 days, no refund will be given. Please see more refund and cancellation terms here.

Price includes

This Hang En tour price includes VAT, entrance fee and environment fee, management fee and other fees of the national park.

The Hang En Adventure tour includes the following services:

  • Food and beverage: Oxalis provides meals, tea and coffee for guests during the trek (excluding extra requests from guests). Dishes follow a fixed menu and vegetarian or vegan dishes are also provided at the request of the guest.
  • Safety equipment: Oxalis will provide safety equipment such as helmets, caving headlamps, gloves and other safety equipment.
  • Travel insurance: Oxalis buys travel insurance for all travelers participating in camping trips with a maximum compensation of VND 10,000,000. Hang En Cave Adventure visitors are advised to purchase their own comprehensive travel insurance prior to joining this tour camping in the cave.


  • Best time to visit Quang Binh?

    Each time, each season has its own beauty. The weather in Quang Binh in general goes through three seasons: end of winter, spring and summer. The cave tour to Hang En operates from December until the end of August every year. Throughout the season, depending on the time that you choose to visit Quang Binh, Hang En adventure tour will give you different experiences.

  • Hang En or Tu Lan, which is to be considered?

    Each tour and cave has its own highlight to be considered. If you like a long trek through a beautiful valley deep in the National Park. Camping in one of the biggest caves in the world, Hang En is a tour that can’t be missed. Meanwhile, if you like to swim through some underground river caves, camping in the majestic jungle next to a waterfall. Visiting different types of caves or listening to the sound of the jungle: Tu Lan is another choice. Please, look at the availability to check the date and tour suitable the most for you.

  • What can I do If I want to talk to/contact a consultant?

    You can easily contact a consultant via chat box (on the right corner) on Oxalis website or email to: [email protected]; Hotline: +84-919900357.

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Whether you prefer long treks, camping in a cave, sleeping under the stars in the jungle, swimming underground in river caves, explore the huge dry caves or just taking an exploratory day trip, Oxalis Adventure Tours can provide the right amount of adventure just for you.

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