This is an incredible way to spend the day. I tried the flight lines and they are so much fun. Once you arrive in boulder city an old van takes you up almost to the top of Red and Black Mouintain. The van ride is an adventure in itself believe me. One of the instructors had to sit by the door to prevent it from flying open. At the top their is a short but steep hike to the top of the Mountain. From there it is all fun. You feel like you are flying through the mountains. They are really fast. The heavier you are the faster you go. It feels really good to have the wind blowing in your face while effortlessly floating through a canyon. Some of the lighter girls did not always make it to the end and the instructors would have to go out and get them. It was fun to watch. The staff is loose and fun but professional, the equipment feels top notch and safe. I loved it.