Rio Secreto Guide: Mexico's Magic Caves

Rio Secreto: A Guide to Playa del Carmen’s Magical Caves

The Rio Secreto Nature Reserve was easily one of the coolest things I did during the three months I spent living in Playa del Carmen, Mexico.

Inside this magical reserve, you’ll find five cave complexes filled with thousands of stunning stalactites and a refreshing underground river.

Visiting Rio Secreto is a great family activity for those with kids looking for a day trip from Playa del Carmen, Tulum, or Cancun. But even if you don’t have kids with you, you might feel like one exploring this underground river.

In this quick guide to and review of Rio Secreto, I’ll go over why you should add this tour to the top of your list of things to do in Mexico, and then provide you with the practical details you need to have a great visit.

What is Rio Secreto?

Rio Secreto Caves
Doing my best explorer pose inside the caves

Rio Secreto is an underground natural reserve located on Mexico’s Riviera Maya near Playa del Carmen. It consists of five caverns that form part of an enormous underground cave network.

I have to admit that before actually visiting Rio Secreto, I was a bit confused about what it even is. It’s located on the highway right next to Xcaret and Xplor, which made me assume it was sort of an adventure theme park like those sites.

Well, I was wrong.

READ NEXT: Top Beaches in Playa del Carmen, Mexico

The caves are filled with some truly dramatic mineral formations and play host to a surprisingly variety of wildlife. While, in disclosure, my ticket was provided complimentary by the park, I would happily have paid the cost of admission to enjoy this awesome and unique experience.

How to Visit Rio Secreto

Rio Secreto Tours
Watching a Mayan ceremony before touring Rio Secreto

Visiting Rio Secreto can only be done through the organized tours offered by reserve. The tours will take you hiking and swimming through about a one kilometer stretch of one of the caves (meaning your visit will represent only a tiny taste of this vast reserve).

All tours of Rio Secreto start at the park’s entrance just off the highway. You’ll watch a brief video while you wait for your group to arrive and sign a liability waiver (that’s why you should make sure beforehand that you have travel insurance for Mexico). Then you and your new friends will pile into a van for the seven kilometer ride deep into the jungle where the caverns lie.

Once there, you’ll meet your guide and receive a brief orientation to the park. There are free lockers where you can change and leave your stuff (you need nothing but your swimsuit), and you’ll be provided with special water shoes, a mandatory life jacket, and a helmet with a lamp. Wet suits are available as well but are optional (I wore one, but in retrospect didn’t feel that it was necessary). You’ll also be required to shower off to prevent the introduction of foreign substances into the reserve’s delicate water.

After that, your guide will take you to witness a brief traditional Mayan ceremony before descending into the cave.

The actual tour of the cave itself only lasts about one hour, but it’s an hour that you won’t soon forget.

The tours are only done with small groups of 10 of so, and you don’t see other groups during your tour, which means that you really get to feel connected to the cave.

Swimming in Rio Secreto Mexico
Swimming in a cave is such a cool experience!

Your guide will tell you about the history of the cave, explain how the magical minerals formed, and will point out wildlife along the way (there are two types of fish in the river, as well as many insects, bats, and other animals).

About half of the time you’ll be walking through dry cave bedrock and the rest of the time you’ll either be wading or swimming through the underground river. The water is a cool and refreshing temperature, but you get used to it easily!

My favorite part of the tour, though?

At one point the guide made us all turn off our headlamps and sit in pitch black silence for a few minutes to just soak in the spooky sounds of the cave. It makes for quite the sensory experience!

After the tour completes, you’ll have a chance to shower and change up and then enjoy an included buffet before taking the van back to the entrance.

Tips for Visiting Rio Secreto

Rio Secreto Tours
Learning about the mineral formations in the caves

If you’re planning your own trip to Rio Secreto, here’s a few things you should know:

How to Get to Rio Secreto from Playa del Carmen, Cancun, or Tulum

Rio Secreto lies just a few miles south of Playa del Carmen. The reserve offers transportation-inclusive packages that will pick you up and drop you off in your hotel anywhere in the Riviera Maya for about $129 per adult. That’s about $50 more than the cost of a basic ticket without transportation ($79 per person).

You can also easily organize your own transport to the reserve. Any taxi driver will know its location. A one-way taxi ride from Cancun or Tulum should cost between 500-1,000 pesos ($25-$50 USD) depending on your negotiating skills, while a ride from Playa del Carmen should be about 120-150 pesos ($6-$8 USD).

You can also take the collectivos (public minibuses) from any of those towns, which will cost only a couple dollars per person at most.

What Should You Bring to Rio Secreto?

Honestly, the only thing you need for your tour of Rio Secreto is your swimsuit and maybe a towel to dry up. Everything else will be provided to you. You don’t even need to bother with sunscreen or insect repellent, since there’s no sun and you’d have to wash those off anyway.

And you don’t need to bother with a camera either, since there isn’t enough light inside the caves to take photos (don’t worry: each group is accompanying by a photographer and you can purchase their pictures afterwards).

For more packing tips for your trip, see our guide to what to bring to Mexico.

What Else is There to Do at Rio Secreto?

The basic admission package includes the tour of the cave and underground river as described above. While this is definitely the main highlight of the reserve, the park does also offer an “Admission Plus” package which starts at $99 for adults and includes an underground light show projected on the mineral formations. While I didn’t see it myself, it certainly sounds spectacular!

Other Tips for Touring Rio Secreto

Here’s a few other random assorted tips to make the most out of your journey to Rio Secreto:

  • Be sure to use the restroom before entering the caves, as there is nowhere to go inside and the guides are VERY serious about not polluting the underground with your bodily waste.
  • While you have the option of wearing a wetsuit, I did and in retrospect would advise to give it a pass. I found it a bit hot and musty and honestly the water wasn’t cold enough to require one.
  • You can’t take a camera in with you, but there is a photographer that will take lots of awesome pictures of your group and then make them available for sale to you on a USB after the tour.


That’s it for this quick guide to touring Rio Secreto. It’s truly an awesome experience and a wonderful thing to do in Mexico’s Riviera Maya. If you have any questions or comments, please scroll down and leave a comment!

Oh, and if you’re heading to the Yucatan, I also strongly recommend taking a day trip to visit the magical town of Valladolid, Mexico. It’s really one of the more amazing places in the area and a lot of tourists tragically miss out on it! You can read my full guide to visiting Valladolid here.

Also, be sure to check out my super practical article on 17 Tips for Traveling in Mexico. It even includes useful information on how to use the restroom 😉

Lastly, if you’re on Pinterest, you can pin this for later here:

Rio Secreto: A guide to the magical caves and underground river near Playa del Carmen, Mexico. Learn why you should visit the Rio Secreto Nature Reserve. #RioSecreto #ThingstoDoinPlayadelCarmen #Cancun #caves
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  1. Is the hike difficult? Or it’s just a simple walk? Is there any crawling required? Will an obese person fit into those caves?

    1. The walk is very very easy. The caves are mostly very large and so for the most part I think you should be fine. Just talk to your guide if you have concerns, as there are different routes through different caves. I hope you enjoy Rio Secreto!

  2. Can I bring my phone in a waterproof pouch and tuck it inside my wetsuit? I’m uncomfortable leaving valuables in a locker.

    1. I am not sure if that will be permitted. I will say that I’d be more worried about dropping it in the cave or it coming out while swimming. Rio Secreto is a professional operation and the lockers should be attended to at all times.

  3. Hi there, very useful information. We are going to Playa Del Carmen next month from Canada and really interested in this tour. But I have few questionsL
    1. I am thinking about just booking a base admission ticket, what is the difference between base and plus?
    2. I can’t swim at all, is it a problem?
    3. Also my child is only 11 year old, is the tour too challenging for the preteen?

    1. Rio Secreto gives you life jackets to wear, so depending on your comfort level it would probably be ok. They allow children and I think an 11 year old could definitely do it. I’d suggest confirming with them on both of those points. The Plus ticket includes a light show at the Salon de la Paz.

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