01
Taíno Petroglyphs
10 minAncient carvings
The indigenous Taíno people left these ancient carvings centuries ago. Your guide points out specific markings along the cave walls. Use your flashlight to see the details clearly.
Explore
The Main Cavern (Cueva Ventana)
The main cavern holds ancient history, native wildlife, and the famous cliffside viewpoint.
After completing the subtropical forest trail, your guide leads you into the dark inner cave. You must wear your provided safety helmet and use your flashlight at all times here.
Inside, the guided path covers uneven rock terrain. The walk through this section takes you past historic carvings and mineral formations before reaching the final valley view.
02
The Bat Colony
5 minKeep lights down
Resident bat populations roost high up in the dark ceilings of the cave. You pass directly under their sections. Stay quiet to avoid disturbing the wildlife. Keep your flashlight pointed down and avoid shining it directly at the bats.
03
Stalactite and Stalagmite Formations
15 minSlippery floor
Humid conditions created these natural mineral formations over centuries. Dripping water continues to shape the rock throughout the cavern. Watch your head and step carefully, as the wet floor is slippery here.
04
The 'Window' Viewpoint
15 minWide-angle lens best
The cave tour ends at a 700-foot-high opening overlooking the Río Grande de Arecibo valley. This large gap gives the cave its name. Guides allow ample time to take turns taking photos. Bring a camera with a wide-angle lens to capture the entire frame.
