Arecibo - Cathedral Cave

Visitors can choose to either rappel down a cliff or hike to the 400ft/122km-long Cathedral Cave (Cueva Catedral). The Cathedral Cave, part of Tres Pueblos, is known for its 40 plus petroglyphs, and is usually visited in conjunction with Cueva Clara de Empalme. Arrive early in the day for the guided tours; the last ones depart mid afternoon but if they're full you may be out of luck.