Barb ~ Mayfield is more of a river walk with falls. You are in the water the whole time at Mayfield, whereas at YS, you can walk up alongside the falls on stairs. You need to be fairly agile to get through Mayfield, but it is so beautiful and peaceful. We've been to both, and I would definitely go back to Mayfield Falls. We were the only ones "on the river" at the time. The guide is from there. He carried our cameras for us in a waterproof bag and took fantastic pictures.