Check out the Rio Camuy Caves and the Arecibo Observatory all on this one exciting tour! This 9-hour adventure begins with a tour of the Camuy Caves, a 268-acre ecosystem that is part of this hemisphere's most impressive subterranean cave network, intricately carved by the mighty Camuy River. You and your guide will then board a tram that takes you down to the cave before we start exploring! Then, visit Arecibo Observatory, where you'll learn about the observatory and even get to see it up close!