This is my first review on TripAdvisor. Our experience at Garl's was so amazing that I feel compelled to let others know. I encourage you to take advantage of this tour. Based on the reviews from this site, I decided to book a tour for myself and my two teenage daughters. It was the highlight for our trip, and if I ever return to the area, I would take the tour again. Don was our guide, and he was great. While he has an abundance of knowledge about the area and was eager to share, what I appreciated most was his ability to help us understand the ecosystem of the park and all that we were seeing. It is easy and pretty basic to memorize facts and spit them back out. Don provided so much more than that, explaining the history, evolution, and current conditions of much of what we saw. We did the full day tour, and our experience was in line with what other reviewers have detailed. The one regret I have is not bringing a camera. The next time I go I will do so and keep it in a waterproof container that can go around the neck.