Skyline Eco Adventures Big Island Zipline Tours is the best company in Hawaii to organize a zip-lining adventure, near the waterfalls that are about 250 feet high and considered one of the most amazing waterfalls in the world. You pass through the falls as you glide effortlessly 500 feet in the air, making this Hawaii adventure unlike any other. Professional trainers prepare the customers to ensure that they have the maximum enjoyment within safety standards.