Check out the rio camuy caves and the arecibo observatory all on this one exciting tourthis 9 hour adventure begins with a tour of the camuy caves a268 acre ecosystem that is part of this hemispheres most impressive subterranean cave network intricately carved by the mighty camuy riveryou and your guide will then board a tram that takes you down to the cave before we start exploring then visit arecibo observatory where youll learn about the observatory and even get to see it up close