Booking process

We have created links for all of our vital documents and ask that you read through each of these thoroughly prior to the start of the booking process. Our team has spent a lot of time creating these documents for you to have the best information in advance of the tour so most questions you could have will be answered by our documents.


  • Step 1: Online Booking

    Choose a date for the Son Doong Cave Expedition and fill in your booking form completely. Please be detailed and honest in your medical & fitness history.

  • Step 2: Automatic Notification Email

    You will receive an automatic notification email that we have received your booking. If you receive this email, your spots are being held while we review your application.

  • Step 3: Booking Review

    Our technical advisory team will thoroughly review your application and contact you if we need further information. This may take up to 5 business days so we appreciate your patience.

  • Step 4: Approval Email & Payment Processing

    At this step, payment will be required via a credit card payment link we will send you. (Bank transfers are accepted for Vietnamese residents).

  • Step 5: Booking Finalization

    We will confirm your payment is received and your tour is confirmed.

  • Step 6: Pre-Departure Support & Follow Up

    If you need any information or support leading up to your tour, including planning your arrival and departure or booking extra nights here, we will be available to assist you.


• Reservations will be accepted on a first come, first served basis through our online booking system.
• Tour bookings are not for resale, and reservations cannot be transferred to another person.
• Reservations for join-in tours will not be accepted via email or phone under any circumstance.
• If you are interested in a private tour, please note that these have a different price, and that you will need to contact us directly to sign up.


Click here: Booking Conditions


For your own health, safety and enjoyment, it is important that you are of a suitable physical condition to participate in the tour activities. The questionnaire is to help us ensure you have a safe and enjoyable trek. Most medical conditions will not exclude you, so please be completely upfront about whatever condition(s) you have so that we can be best prepared to accommodate you. You will be days away from any hospital and we need to know your accurate situation. Please, do not lie on your medical form. We will do everything we can to help you join the tour. If your health status changes between when your booking is approved and when you join us here, it is your responsibility to advise us of that so that we can review your booking if necessary. If we find at any time that you have not completed the form honestly and in good integrity, we have the right to cancel your tour without refund.

Be advised that this tour is not for those with limited outdoor/trekking experience, those in poor medical condition, nor is it for children or expectant mothers. If you answer yes to any question, our specialist team will e-mail you for more details. This is routine, and you should not worry that it means you will not get on the tour.

Finally, be detailed in your answers, otherwise your reservation will be rejected – “regular walking”, “going to the gym” are not considered detailed. You must have some previous outdoor experience such as trekking/hiking, or climbing (not just indoor wall), caving, etc.

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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.

Multi-day packages

Overnight tours

Day tours

Family tours