Underground River Chontalcoatlan

To find out what it feels like to walk under the ground and get to know the Chontacoatlán underground river that enters the total darkness of a cave, we offer you this adventure excursion. In it, we will head towards the Cacahuamilpa grottos and, upon arrival, we will walk to the Skylight, from where it is possible to observe the imposing magnitude of the cave.

there, we will rappel to enter the cave. Once inside the cave, we will walk a great stretch of this black body that, when illuminated, exposes its unique formations, originating thousands of years ago. The extraordinary thing about these formations is that they are constantly growing and, being formed by crystals They glow when you light them up.

Upon leaving the cave, we will enjoy a delicious local meal at the Cacahuamilpa Market.

What is included?

  • The loan of a rucksack
  • Lunch
  • Accident insurance
  • Qualified guides
  • Transport
  • Safety equipment
  • Entrance fees
  • Head torch
  • Life jacket
  • Helmet

What to Bring

  • Towel
  • Sun cream of at least factor 30
  • Complete change of clothes
  • Insect repellent
  • Wash kit
  • Mountain coat
  • Boots or trainers with a treaded sole and which protect the ankles
  • Comfortable shirt and trousers, preferably made of synthetic fibres and not cotton, including jeans.
  • Large bag for your wet clothes at the end of the descent


  • Neck scarf / Buff
  • For those who use glasses, cord to firmly tie glasses
  • Waterproof trousers of lycra leggings
  • Waterproof camera or camera in a waterproof case

This is not recommended for pregnant women, people with neck or back problems, people with haemophilia, asthma or epilepsy or for people with heart problems.