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

Booking Process

Your participation in the expedition is secured after you go through the five steps below. For detailed information about each step, please see this document: Download link

  • 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 and 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 review your application and contact you if we need any more 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 before your tour, including planning your arrival and departure or booking extra nights in the area, 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’re interested in a private tour, please note these have a different price and you will need to contact us directly to sign up.
Terms And Conditions

Please download the full document about terms and conditions here: Download link


Please download the full document here:

Son Doong Expedition 4D3N Download link

Medical Form

The medical form can be downloaded from here: Download link

This is a copy of our medical form for your reference only; the idea is for you to know which questions we’ll be asking in our online form in case you plan on booking in pairs or groups. Please do not email us this form back!

Please note that the medical form has to be answered by each participant in a group booking.

For your own health, safety and enjoyment, it is important that you are of a suitable physical condition to participate in the tour. 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 we can be best prepared to accommodate you. You will be days away from any hospital and we need to know your 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 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 a 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 to go participate in 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.

Physical Checklist

Prepare yourself in the best physical condition for the trip: Download link

Tour Dates

Please check the Son Doong Expedition 2019 available departures here. Please follow this page and ourFacebook fanpage to stay notified.

Frequently Asked Questions

Please visit this link: FAQ - Son Doong

If you still have any questions that have not been mentioned in the links and documents above, please let us know and we will do our best to get back to you in a timely manner.

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