We went through over 100 rapids on the river, many of them Class 10. The Colorado River, as with several other big rivers in the West, use a scale of 1-10 to rate the difficulty of the rapids to navigate, with 10 being the most difficult. This is Hance Rapid, class 7-8. I disembarked before the rapid and walked downstream to a location where I could shoot the rafts coming through. This was not our craft coming through. It was one of the dories traveling parallel to us.