Camuy River Caverns
There are only two other places in the world where you will find a cave system as massive or dramatic as the Río Camuy Cave Park -- and neither of them has a tropical underground river thundering through it!
San Cristóbal Canyon
The only volcanic canyon formed in the Island, the San Cristóbal Canyon lies between the towns of Barranquitas and Aibonito. At almost ten kilometers long, it is where the Barranquitas and Usabón rivers pass through.