Cave Camping in Vietnam: Sleep, Food, Porters and Cost

You sleep in a tent on a mattress, at a campsite pitched either in the jungle or inside a cave mouth. You eat hot food cooked on site by the porters. The toilet is a composting bucket with a seat, inside its own tent, and you cover it with sawdust afterwards. You will be wet from about hour two of day one and you will not be properly dry again until you get back. Two days costs from 5,175,000 dong and five days costs 35,000,000.

None of that is a warning. It is what people want to know before they commit a thousand dollars and a week, and almost nobody writes it down.

Where you sleep on a cave expedition

Tents, with a proper mattress rather than a mat. On Jungle Boss expeditions each tent has a thick mattress, a pillow, a blanket and a fan on hot nights. Sleeping bags are provided where the nights are cold enough to need them. Permits for every cave in the park are issued by the national park authority sets what may be visited and by whom.

The campsite is usually at a cave entrance or on a riverbank near one. On some expeditions you camp inside the cave itself, which is the part everyone remembers: it stays a constant cool temperature, there is no weather, and it is completely silent apart from water.

Two things nobody mentions. There is no light once the generator-free camp settles, so your head torch is your only lamp. And the temperature underground is steady but the humidity is total, so nothing you hang up will dry overnight.

Camp sits beside water, because everything gets washed and nothing dries.

Toilets on a multi-day cave expedition

Asked constantly and answered almost nowhere, so plainly: it is a composting toilet in a private tent, with a standard seat over a waste bucket. You cover what you leave with rice husks or sawdust from a bin beside it, which controls the smell and starts the composting.

It is clean and it is private. It is also a bucket in a tent in a jungle, and if that is a dealbreaker then a multi-day expedition is not for you and a day trek is.

Everything is carried out. Rules in this World Heritage park and operator practice both require it, which is why the composting system exists rather than a hole.

What you eat underground

Better than you expect. A typical two-day tour runs to a picnic lunch on day one, a barbecue dinner at camp, breakfast on day two and lunch before you come out. Food and drinks are included in the price throughout, along with the cooking.

Underground camps have no weather and almost no sound.

The barbecue is the good bit: grilled meat and vegetables done over a fire at the campsite, usually with rice and a regional salt-and-chilli mix. Vegetarian and other dietary requirements are routine, but they must go in at booking, because every ingredient is bought and carried in days ahead. A request made to your guide on the morning cannot be met.

How wet you get on a river cave tour

Completely, and early. These are river caves. You will wade, you will swim sections in a life jacket, and on the wetter tours you are in water for a meaningful share of the day.

The practical consequence is a two-set system: one set of clothes you trek and swim in, which stays wet for the whole trip, and one dry set that lives in a dry bag and is only ever worn at camp. Do not mix them. People who put on their dry clothes for the walk out spend the last four hours in wet ones.

Cotton is the enemy. Quick-dry fabric dries on your body as you move; cotton does not, and a cave at 20°C with wet cotton against you is genuinely cold. Cave swimming skills covers what is different about swimming underground, which is mostly that you cannot see the far side.

Scale only registers once somebody walks into the frame.

What porters carry on a Phong Nha expedition

Almost everything. Tents, mattresses, sleeping bags, all the food, cooking equipment, safety gear and ropes go on the porters' backs, and they arrive ahead of you and have camp standing by the time you do.

You carry a day pack: water, a dry bag with your camp clothes, a camera and your own medication. The personal luggage limit that gets carried for you is typically around 7kg, which is more than enough because there is nothing to spend money on and nowhere to be smart.

Porters are local, they are doing this route regularly, and they are carrying more than you at twice your speed in worse footwear. Tipping is not obligatory in Vietnam and it is normal here. Budget for it rather than working it out at the end.

A day on a multi-day cave tour

Pick-up is early, usually around eight, with a safety briefing at the office and kit issued there: helmet, head torch, gloves, life jacket and boots if you need them.

Entrance chambers are where groups stop, eat and reset before going deeper.

The morning is trekking. Jungle trail, stream crossings, heat, and on some tours a long first climb. Lunch is somewhere with water. The afternoon is the cave: scrambling, wading, rope sections where the guides rig everything and teach the technique on the spot.

Camp is reached in the late afternoon, which leaves time to swim, get the wet clothes off and sit down before dinner. People sleep early and well. Day two is the reverse, usually shorter, and you are back at the office by mid to late afternoon.

On a three or five-day expedition the middle days are the point, because you are far enough in that the walk out is a day in itself.

Be honest with yourself about fitness before you book, not on day two. Turning back partway is nobody's fault and the guides handle it calmly, but there is no refund and the onward costs are yours.

What happens if you cannot continue

You will be brought out safely. Every tour carries safety assistants alongside the guides, operators run their own safety and rescue training, and getting a person out is a situation these teams train for specifically.

On the longer expeditions the middle days are the point, because the walk out is a day itself.

Financially it is less comfortable. Under the published terms, if you start a tour and have to return for your own reasons, there is no refund and any onward costs are yours. Oxalis states the same for Son Doong: if difficulties arise on day two the tour may be suspended with no refund or rescheduling.

That is standard in expedition caving, because the guides, porters and safety team have been paid either way. It is also the reason to be accurate rather than optimistic about your own fitness when you book.

Which Phong Nha cave expedition to choose

Two days is enough to understand what this is. Three is where it stops feeling like a long day trip. Five is a different undertaking and you should have done a two-day one first.

For the caves themselves, the Tu Lan cave tour is a first-hand account of the middle grade, and the Son Doong cave tour is the one at the top, currently booked out to 2028.

If you are still choosing, the best caves in Phong Nha covers what is inside each, cave animals covers what else is down there, and the Hang Cha Ngheo sinkhole is a reminder that they are still finding these.