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Puerto Rico

The cave world of Puerto Rico: Parque National de las Cavernas del Rio Camuy

22. 05.2024

In the underworld…

Puerto Rico is home to the world's third-longest underground river – the Rio Camuy. The cave system in the northwest of the island can only be visited as part of a guided tour.

01 Start of the Rio Camuy cave tour
Equipped with a helmet and audio guides – in English – we first walk about half an hour downhill to the cave entrance.
03 Parrot plants
The parrot flower is in season and in full bloom.
02 Whistling Frog
Hidden beneath a leaf is a coqui frog. It measures 3 to 5 cm in size. It is the only frog species that lays eggs that hatch directly into small froglets, not tadpoles.

On our way to the cave through the lush forest, our guide draws our attention to this specimen. The coqui frog is the unofficial national animal of Puerto Rico—named after this unassuming fellow from the whistling frog family, who lets out his loud "coqui" whistle at night, thus contributing significantly to the vibrant soundscape of Puerto Rico's nocturnal jungle.

04 Banana plant in front of steep wall
We continue descending – the high rock walls tower before us.
05 small colored lizard
Optimally camouflaged lizard…
06 Descent to the cave
The walk takes about half an hour and is steadily downhill…
07 Bridge
…over bridges and through tunnels…

After Hurricane Maria hit Puerto Rico hard in 2017, the cave system was under water for a long time and only since March 2024 the caves can be visited again.

08 Bizarre formations of stalactites
The entrance area is full of stalactites.
Entrance to the cave of the Rio Camuy.

The underground cave system was discovered by archaeologists in 1958. The known system covers a length of 10 miles – around 220 caves have been explored so far, and another 800 are thought to be still existing.

11 Incidence of light
There are – so far – 17 known entrances, so daylight falls into the cave system at various points
12 View from the cave
From the barren cave world, a view into the lush nature outside…
12 In the light cone
Photo spot – the clayey, damp ground is quite slippery…
13 View from another exit
An opening in the cave ceiling…
14 hiking group
Opening at the end of the visitor cave.
15 light cones
The course of the Rio Camuy is largely not visible because it runs below the open cave.
16 Look into the sky
View from the cave upwards…
17 the Rio Camuy
View of the Rio Camuy.

A circular tour then leads through the cave back to the entrance. Along the way, we scare away a few bats and pass through a few narrow passages.

Cave system
The cave world of Puerto Rico: Parque National de las Cavernas del Rio Camuy 19

Now it's time to head back to the visitor center – and this time the path is uphill...

However, a shuttle with golf cards is offered for seniors…)))

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