Swimming is not required on Nuoc Nut 1-Day Discovery. You will spend 2 km caving in river cave with the water temperature about 17 degree Celcius. Depending on the time, the water level is about knee-deep to belly-deep.

Yes, you do. We require that you wear long pants and long sleeved shirts in order to protect yourselves in many ways. You may encounter sharp rocks, thorny bushes, stinging plants, mosquitoes and more in the jungle; therefore, long pants and long sleeves provide added protection against these elements.

Yes. We provide jungle trekking boots sized from 36 to 46 which are available for anyone to borrow on the morning of the tour date. Please be advised that you need to prepare a pair of long and high-quality socks to avoid getting blisters for the first time using our shoes.

Please check the Arrival & Departure Guide on our website for more information.

All electronic devices will be collected and stored in a dry box (25cm high, 15cm diameter) by our tour guide before swimming. Please bring your own dry-box or dry-bag if you have really big cameras, just to make sure! Also, please note that you will carry the camera by yourself if you have a professional and big camera, the same for its tripod.

We will be passing the peanut fields however they are further away on both sides and we will not stop anywhere close to them at all. And it's unlikely that you would touch any peanuts around either. Just please let us know in the Booking Form so that our chef will be aware of your allergies.

Regarding the 15-meter ladder climbing, mind that you will be wearing a safety belt, under supervision of our tour guide and guide assistant. And the tip is to keep looking straight or up, not down. This is not extreme height by any means and we think it's a good chance to push some self- boundaries a bit, knowing that you will always be safe and sound with Oxalis.

Please check the Arrival & Departure Guide (link) on our website for more information.

Tours start and end in the small town of Phong Nha, located about 50 mins from Dong Hoi (which has the nearest train station and airport). If you are staying in Dong Hoi, we can pick you up for an added cost of 640,000 VND one way for a 4-7 seater car. Please advise your sales consultant if you would like this added service.

As Hang Tien is a very big cave, there are only 1-2 narrow places (0.8 - 1 meter in width and some meters in length), where you will walk with care, you do not need to crawl.

With diversified terrain and from our experiences, sandals are not recommended on our tours. We highly suggest you prepare the trekking boots/shoes which cover all your feet and have good gripping to do the tours, as the terrain is rocky, slippery and sometimes muddy.

The tour is scheduled to finish in Phong Nha at 18:30 – 19:30 depending on the weather condition and the whole group’s speed.
Then you can choose to leave for Hue/Da Nang/Hoi An by sleeper bus departing from Phong Nha Center between 19:45 – 20:00. If your next destination is on the north Viet Nam, there are options of sleeper bus departing from Phong Nha at 21:00. For more detailed information, kindly visit the guidance at Arrival and Departure.
In the case you would like to take the train from Dong Hoi, it’s best if your train departs after 20:30, your flight takes off after 21:30 and you have a private transfer arranged in advance with Oxalis (VND 640,000/4-7 seater car – 50 minutes driving).

While climbing skills are a great asset, it is not necessary to have any technical climbing experience to join in the Tu Lan Cave Encounter.

No, you cannot change during the trip. There is a lot of swimming combined with trekking and we don’t have enough time to change to dry clothes during the trek. When you reach the campsite, you can change and enjoy some warm drinks.

If you enjoy swimming and warm weather, please book the tour from April to August. If you are looking for a warm campfire at night, and cooler weather, you can book the tour between November to March. However, due to safety reason, there is less swimming in the caves if the air temperature is below 18 degrees Celsius. We will reduce the swimming part and do trekking combined with exploring the river caves by boat instead.

This is one of our top-ranked tours for photography enthusiasts. We highly recommend bringing a tripod and a wide-angle lens if you have it, in order to best capture the vistas within the cave. You’ll get great shots of the campsite set up on the beach (you can take photos from the cliffs above) and in late December to early March, you have the opportunity to witness and photography amazing sunbeams when the sun is shining.

You are unlikely to meet anything dangerous inside cave. The cave is home to thousands of swifts in the nesting season, and there are many bats all year round. Please note however that the bats do not carry rabies or other infectious diseases, and they are harmless. We ask that you respect them (and all wildlife) by not touching them or disturbing them in any way.

This tour is ranked Adventure Level 3 due to the long trek it takes to get there and back. The trek is about 10 km each way and includes an enormous hill at the beginning and end of the tour. The last hour and a half coming up the hill at the end of the tour is the hardest part of the trip.

Yes. This tour starts with pickup between 8:00 – 8:30 am in Phong Nha. Hence, if you plan on arriving on the tour morning by night bus/train, please make sure that you will be ready in the area before 7:30 am.
The tour normally returns Phong Nha around 5:00 – 5:30 pm the following evening, so you would be able to depart by night bus/train heading either north or south. If you choose to travel with either flight or train, please make sure your flight departs no earlier than 7:30 pm.
Please check our Arrival & Departure guide for further information regarding buses and trains.

Excellent swimming skill is not required for this tour. All participants will be swimming (100m) and wading with lifejackets - even if they are an expert swimmer. Moreover, our safety assistants team will always be around to intervene and support when needed.

The water temperature is quite stable and a bit lower during winter. It is around 15 - 17 degrees Celsius that time.

During the swimming part, all electronic devices will be stored in a drumbox (100% waterproof) which is carried by the Oxalis team. The box's diameter is 15cm and height is 25cm. For Hang Va Expedition, you don't need to carry a waterproof backpack as your luggage will be left on the dry ground and a big plastic bag during the swimming part of the cave.

Please go to https://oxalisadventure.com/arrival-departure-guide/ for more information about Phong Nha arrival and departure guide.

The flying fox is about 15 meters height, and to be used only in rainy season (November through early March) to ensure safety when there could be water inside the cave.
This is not extreme height by any means, and with the headlamps provided as well as the full support from Oxalis team with guide, guide assistant and porters, each turn will be finished within 2-3 minutes smoothly.
In dry season, normally from late March to early August, we can walk and explore the cave without the use of flying fox.

There are bats in some of the caves however that the bats do not carry rabies or other infectious diseases, and they are harmless. We ask that you respect them (and all wildlife) by not touching them or disturbing them in any way.

While rock climbing skills are a great asset, it is not necessary to have any technical climbing experience to join this tour. There are some squeezing parts inside the cave or through the rocky path leading to the cave entrance.

Please check the Arrival & Departure Guide on our website for more information.

All electronic devices will be collected and stored in a dry box (25cm high, 15cm diameter) by our tour guide before swimming. Please bring your own dry-box or dry-bag if you have really big cameras, just to make sure! Also, please note that you will carry the camera by yourself if you have a professional and big camera, the same for its tripod.

The tour typically ends between 5:00 and 6:00 PM in Phong Nha. If you are planning on leaving Phong Nha right after the tour, please make sure that the bus departs Phong Nha no earlier than 6:30 PM, and the train/ flight departs Dong Hoi city no earlier than 7:30 PM.

Yes, please feel free to make any stops to take photos along the way. It's completely dark inside the caves, however, we do support some lightings to help you capture the beauty of the caves still.

Please check the Arrival & Departure Guide (link) on our website for more information.

The total length of the caving in Hang Tien Exploration is around 6.5 km, which is mainly walking inside the cave and admiring the formations of the cave. Other than that, on day 3, you will be climbing a ladder inside Hang Tien 1.

During the rainy season in Vietnam (mid-September to mid-November), we close all the tours for safety reasons as the caves are at risks of getting flooded. Apart from this period, there will be only occasional rains which don’t affect the status of the tour. However, it is important to wear proper trekking shoes with good grips for the best experience on the slippery jungle terrain when it rains.

As swimming through Hung Ton cave is a part of the trek, you will be swimming with your trekking clothes on. Therefore, it is best to wear light and quick-dry materials for the best experience. However, when you have settled at the campsite, please feel free to change to your swimsuits and enjoy a relaxing swim at the natural pool nearby.

Please go to https://oxalisadventure.com/arrival-departure-guide/ for more information about Phong Nha arrival and departure guide.

While climbing skills are a great asset, it is not necessary to have any technical climbing experience to join in the Tu Lan Cave Encounter.

No, you cannot change during the trip. There is a lot of swimming combined with trekking and we don’t have enough time to change to dry clothes during the trek. When you reach the campsite, you can change and enjoy some warm drinks.

If you enjoy swimming and warm weather, please book the tour from April to August. If you are looking for a warm campfire at night, and cooler weather, you can book the tour between November to March. However, due to safety reason, there is less swimming in the caves if the air temperature is below 18 degrees Celsius. We will reduce the swimming part and do trekking combined with exploring the river caves by boat instead.