He knew extensively about the site and its history, but he also knew about the flora and fauna of the area. I could tell from the other people with their guides that they were not getting the same insights from their guides as I was. He was patient and helpful and always ready to clarify things when I asked questions. To be honest, when I initially booked the tour, the price was a factor that weighed on my mind. However, the quality of the guide and the smoothness of the whole day was definitely worth it.