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2 Caves to Explore in Puerto Rico (Things to do in Puerto Rico)

2 Caves to Explore in Puerto Rico

Caves, Cracks and Crevices


A spectacular view from inside Camuy Cave.

A spectacular view from inside Camuy Cave.

Parque Nacional de las Cavernas del Río Camuy

Located in northwest Puerto Rico in Arecibo, there’s a cave system called The Parque Nacional de las Cavernas del Río Camuy or Rio Camuy Caves.  In the 1950s researchers discovered this large network of natural limestone caves and underground waterways carved out by the third-largest underground river in the world, the Río Camuy.


The canopy of trees and lush vegetation is dense, it’s hard to believe such an extensive cave system hides below the thick forest. Today there are more than 10 miles of mapped trails leading to 17 entrances and 220 caves. Only a small part of the cave system, a 268 acre park however, is open to the public.  It is home to 3 sinkholes through which an underground river runs, and 2 awe inspiring caves which visitors can explore.

Spiral Cave and Sinkhole

A tour guide leads you through the 2 Caves to Explore in Puerto Rico

A tour guide leads you through the caves system.

Tours are given five days a week and start with a short tram ride down through lush forest toward the opening of the cave. The walking audio tour begins with a 205-step stairway into the chilly, dark cave.  Soft lights and railings help navigate the sometimes slippery path. The route leads past stalactites, stalagmites, and many unique and beautiful formations of the cave walls. The audio tour is accompanied by a tour guide who leads the way, provides additional information, and answers any questions you may have.

The cavern opens into area where the Camuy River runs into subterranean waterway.  A sinkhole from above gives view to the vegetation  hanging into the cave like long thin fingers hanging down from a hand.  The gentle tweets of birds, as they fly between the opening, gives a peaceful connection between light and life above, to the darkness below.

Clara Cave and Sinkhole

This sinkhole is the highlight of the trip.

This sinkhole is the highlight of the trip.

The Clara Cave chamber is immense, and it could fit a 20-story building inside. Towering boulders, vast openness, and the height of the ceiling evoke silence – only broken by the gentle splash water droplets and the echoes of the visitors hushed voices. The huge sinkhole above produces eerie shadows as beams of light enter the cave, creating a surreal dichotomy of light and dark. In another area of the cave, the Camuy River can be seen below as multiple bat species fly between the crevices of the caves walls.

This is a spectacular and informative tour.  It’s best to get there when it first opens as the park will close when filled to capacity.  Also, if you suspect rain the day you plan to go, call ahead as the park will close when it rains due to flooding. There is a picnic and gift shop area.

Hours: 9-5 Wednesday through Sunday, closed Monday and Tuesday.

Fee: Tickets are $18 for adults, $13 for children ages 4 to 12, seniors get a discount, and kids under 4 are free. Parking is $3 to $4 depending on your vehicle.

Address: Quebrada, Camuy 00669, Puerto Rico

Phone: +1 787-898-3136

Website: Parque Cavernas del Río Camuy


Stunning views at the cliffs edge.

Stunning views at the cliffs edge.

Cueva Ventana

Set at the side of a cliff, Cueva Ventana means “Window Cave.” Unlike the Camuy caves which are underground, Cueva Ventana is stunningly located on the side of a cliff in Arecibo.

With admission you get a helmet, flashlight, and a guide to walk you through the cave. During the 45 minute walk, trained biologists deliver insight into how the caves formed and the many creatures which call it home, such as insects, snakes, and bats. They also discuss the plants on site, some of which are near extinction and provide the history of the original Taino Indians who were the original inhabitants of this area.

The cave offers impressive stalagmites and stalactites, however, the real highlight is when the passage finishes dramatically and the open face of the cliff frames the lush Río Grande de Arecibo valley far below. The scenic vistas from this vantage point have attracted visitors for decades, providing views across the entire valley and down to the ground below.

Hours: Monday – Sunday, 10:00 a.m. – 4:00 p.m.

Fee: Tickets are $10 for Puerto Rico residents and $19 for non-residents.

Address: PR 10 Km. 75 * Hato Viejo * Arecibo * Puerto Rico 00612

Directions: From San Juan take Route 22 West to Route 10 South, exit 75B at KM75. Park at or near the Texaco gas station on the east side of the road (they sometimes charge to park at the station). 

Phone: (787) 322-3554

Website: Cueva Vantana


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For other things to do in Arecibo, read below:


Exploring Arecibo Observatory in Puerto Rico

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