This is a challenging tour that requires climbing up and down large boulders numerous times. I was not aware of this until we were in the canyon and it began getting more difficult as we went on. The staff were amazing at ecouraging and reassuring everyone that we would could do it. However, I do wish I knew the difficulty level as I had planned for a leisurely tour to take some photos and almost had a panic attack when I discovered what I was in for. The other tourists also noted surprise, some excited and others unsure. Some did not have proper cimbing foot wear, wear good runners or hiking boots! Overall, I am glad I did this, but at my age and fitness level I was quite sore in the joints for a few days.