I went on the Yunke Zipline Adventure with my two children (teen and pre-teen) and we had a great time. The ziplines are set up in the foothills of the rainforest. You meet at a basehouse and there is a short hike up to the ziplines. Along the hike there are great views across the rainforest and out to the ocean. The ziplines require a bit of rigorous activity in terms of climbing up to the platforms and rapelling down. The series of ziplines carried you down through the forest and the last zipline, in particular, was an awesome experience with great views all around. The guides were fantastic. They had extraordinary knowledge of the rainforest and we learned a lot about various plants and unique species within the rainforest. They were able to identify various birds by sound and to provide elaborate detail concerning each species. They also pointed out some endangered species along the way and we were able to actually come in close contact with the Puerto Rican boa (with no risk of exposure however). It was an amazing experience. I would highly recommend it to anyone over 10 who is in decent or better physical condition.