• Location: Cancun, Mexico
  • Duration: Flexible
From USD $ 78.99 View price calendar

Low Price Guarantee

Explore the Rio Secreto Nature Reserve outside of Cancun on this full-day excursion, where you'll swim and wade in one of the most spectacular underground caves in Mexico. See the famous crystal caves on a tour that showcases the spectacular natural wonders of the Yucatán. Choose round-trip transportation from your Cancun hotel, or meet your guide at Rio Secreto directly.


  • Rio Secreto Nature Reserve
  • Swim through an underground river and enjoy the tranquility inside an ancient cave
  • See gorgeous crystal-like cave formations above the turquoise water
  • Hotel pickup and drop-off from most Cancun and Playa Mujeres hotels (if option selected)

What You Can Expect

Rio Secreto Underground River Tour with Crystal Caves

Visit Rio Secreto Naure Reserve

Choose pickup at your Cancun hotel or meet directly at Rio Secreto Nature Preserve.

Arrive at Rio Secreto and listen as your guide reviews safety considerations and hands out equipment, including a hard hat with a lamp, a wetsuit, a life vest and water shoes.

Follow your guide into the underground cave to view the breathtaking crystal formations on both the ceiling and and the floor. Walk along a path through the caves and wade or swim through the river itself. Enjoy the sound of your group's movement through the subterranean cavern echoing off the walls. View the vibrant colors and dramatic mineral forms that lie hidden deep below the surface of the earth.

Exit the cave and opt for a shower at the Rio Secreto's facility. Swing in a hammock and relax in the Nature Preserve before boarding your bus for the return trip. End your Rio Secreto adventure with drop-off at your hotel in Cancun or at the Plaza Kukulkan.

Customer Reviews

Stefa F

5 star rating: Highly Recommended February 2018

This was our second visit to Rio Secreto. Wonderful experience with an awesome guide. Well worth the money.

Robert T

5 star rating: Highly Recommended February 2018

This was an amazing tour and well worth the time away from the all-inclusive resort. Our tour guide was very knowledgeable and passionate about preserving a natural treasure.


5 star rating: Highly Recommended January 2018

This tour was very special. Going into this wonderful cave with an excellent guide like Carlos was an amazing experience!. He managed with a lot of skill and safety two groups in different languages. Very recommended tour and guide.

Jomah L

5 star rating: Highly Recommended November 2017

This is a must see in Mexico!

Lauren S

5 star rating: Highly Recommended October 2017

Awesome trip! Both the driver and the tour guide were excellent! I would highly recommend this.


5 star rating: Highly Recommended September 2017

This was the most awesome trip our guide Nunes was wonderful and they took us in groups of 10 which was super ....the lunch was something to ask for ...they could have given us way better food need not be fancy but atleast flavorful ?? we were not a fan of the food at all here but trip was very exciting and well organized.

Barbara D

5 star rating: Highly Recommended September 2017

Really unique experience. The water is not as bright as the camera depicts.

Carol W

5 star rating: Highly Recommended September 2017

Loved, loved, loved it! Wish we could have bought the pics. They were a little too pricey.

rebeccA B

5 star rating: Highly Recommended September 2017

We had a great guide and found this a fascinating afternoon. Highly rec

Carmen United States of ... 

5 star rating: Highly Recommended August 2017

We are so grateful we were able to experience this! We were two couples traveling together. Our guide during our transportation there did advise us no cameras or GoPros were allowed inside the cave. While initially disappointed at that news, we were later very glad to have an excellent photographer accompany us. We found everything quite organized. We had a quick introductory video about Rio Secreto, were assigned a guide. We loved Rudolfo! We were directed to the restrooms, lockers, showers, and fitted with our gear. Most of us chose the optional walking stick, and were thankful we did. Our guide Rudolfo was most informative about the area and the cave system. We were blessed by a Mayan Holy Man before entering, which was very cool. Rudolfo asked that we all keep each other safe by pointing out jagged rocks Rudolfo would identify under the water to each other as we passed them. In many parts, the footing was very uneven, and he was always right there to lend one of us a hand getting through. We were mostly in the cool, crystal clear water throughout our cave tour. Anywhere from above our ankles to not being able to touch the bottom, and thats where our life vests and swimming abilities came in handy. Our guide pointed out so many geological formations and explained how they got there, including all the creatures we came across cave crickets, the tiniest shrimp, bats, etc. At one point, Rudolfo said he wanted all our headlamps off, and he was turning his off for us to take in the beauty of the natural cave for 3 minutes. What an amazing feeling that was! There were 10 in our group, including 3 young kids and their father. None of us made a sound. At first, I couldnt even tell if my eyes were open or closed, it was THAT dark. I did feel and hear a fluttering by my head, which slightly startled me. When Rudolfo turned on his lamp, and had us do the same, he confirmed with me that he also felt the flutter, it was one of the fruit bats flying past us. So cool. After trekking back out, we had a toast to our successful adventure of a sweet liquor made from the honey of the special bees that lived in the cave and the surrounding area, then were directed to an indoor area which displayed our professional photos on computers. We couldnt pass them up, they were so good. We purchased the USB which had numerous photos of the 4 of us, sometimes together, sometimes separate, along with 25 additional gorgeous shots of the underground cave and river system. We were then fed an authentic Mayan meal, while we visited with those in our group, taking turns sharing our individual experiences of the cave. We loved this amazing experience and consider it a must do!

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