Just visited on Oct 11, 2010. Perfect weather and beautiful views. Guides AJ & Mike were excellent, provided great instruction as well as interesting facts about Redwoods and zipline. First 2 zips are short but then the "sizzler" (fastest zip) gets you flying above most of the trees to the highest point on the course. Iakes a minute to adjust to the height but felt totally safe at all times. Spiral staircase is very cool and the 80ft rappel at the end is a great way to finish.