Here's a trail good for a long day-hike or a backpacking trip.
Start out by fording the wide but shallow Bumping River, then climb through forest and meadows to two lakes in the heart of the William O. Douglas Wilderness.
There are plenty of campsites at the lakes and for those with enough time, a loop around House Rock is easily done via the trail from the inlet to Big Cougar Lake, the PCT, and the American Ridge Trail back to the lakes.