Arecibo, Puerto Rico
Cueva Ventana (English: Window Cave) is a large cave situated atop a limestone cliff in Arecibo, Puerto Rico, overlooking the Río Grande de Arecibo valley. It is visible from the PR-123 but is accessible from a trail that begins adjacent to a Puma Energy gas station located along PR-10 on kilometer
75. The cave and surrounding land are privately owned.
Listen to the audio guide for Cueva Ventana Free on WIP — starts by itself when you arrive, even with the screen off