Grutaventura is undoubtely the most impressive part of the park. It is a beautiful underground cavern that was only recently discovered.

Descend into this magical underground world, walk along its passageways, swim in its cenotes and enjoy one of the most amazing tours in the Mayan Riviera.

The cavern consists of two cenotes connected by naturally formed passageways. Throughout the cavern are beautiful natural formations called stalagmites and stalactites.

Stalactites are formed when water seeps through cracks in the cavern roof.

These drops develop a fine calcite layer around them. Over thousands of years the calcite forms thin tubes. It has been estimated that it takes about 100 years for a stalactite to grow a single cubic centimeter (about 6/100th of a cubic inch).

 
While stalactites grow down from the top of the cavern, stalagmites grow upwards from the floor. Over thousands of years, they form from the water that drips from the roof. By analyzing these formations, scientists can determine past temperatures and rainfall patterns several thousand years into the past. The stalactites come in a wide range of peculiar and fascinating shapes.