If you drive up the Cougar Ck RD to FS boundary there's a rd on the left leads to a small campsite. There are 3 rds going south, the one in the middle or right side are probably the best bet. If there not cabled you can drive all the way to 40 line it'll be a fence running E&W. I've seen big mules on the breaks of Wenachee canyon its FS ground.