Had a great day zipping through the forest with Denali Zipline Tours. The guides are knowledgeable and very well-trained. For the most part, you are in wooded areas, zipping from one deck to another up in the trees. There is one opportunity for a short rapel from one deck down to another. There are a few short zips, and several longer one. We were lucky and had great weather and could see to Denali. The last zip is a long one over a lake. I had a great day.