The Red lines show the class 4 sections and the Green the class 3. The bottom red is only one exposed mantel move and there may be an easier way lower and to climbers right. The middle red section is listed in the guide books as class 4 but our group found it to be rather easy and unexposed class 3. The top red is listed and looks like class 4 but we went to climbers right which is mostly a scramble and class 3 at most.