Cougar Creek is a 3-mile stint that descends off the Skull and Crossbones ridge to the Toats Coulee Road. It's a well-maintained dirt and gravel road with a single pull-off suitable for a campsite near the north end.
The road runs through active timber harvesting and cattle grazing areas, so users should pay close attention to large trucks and cows on the road or passing their camp.
Cougar Creek is part of section 6 (Conconully to Canada Border) of the Washington Backcountry Discovery Route (WABDR), a scenic 575-mile mostly offroad route from the Oregon state line to the Canadian border.