Easy 15 minute walk to the cave. Incredible view. Learn cultural and ecological history. Travel through an exciting cave to reach the window view. Wildlife is very common.
Take a short and easy guided hike up to and through the cave to this amazing view of the surrounding landscape and the Rio Grande de Puerto Rico, the river that runs below the cave. It is a 15 minute walk to reach the cave, then you will have another 30 minutes to explore the interior. The guide will teach you about the history and ecology of Puerto Rico, and a lot about the area.
After reaching this view you can take the same path back, or you can travel down through to another cave. The time it takes to return is about the same, but you get the experience of going in through one part of the cave and coming out the other.
The cave has lots of fruit bats, and the guides are careful not to bother or disturb them while you are moving through. They will provide lamps, as well.
Arecibo is located about 2 hours west of San Juan and is well worth the trip, with its beautiful caves and a number of scenic beaches.