Actually Mike, the forest service can require a pass on any trailhead that has a crapper, and a picnic bench. There was a recent court case on whether they could require a pass at primitive trailheads. They lost the case which is why you've seen them pack some cheapy portajohns and benches into some areas so that they can require a pass. I've been ticketed in the Alpine Lakes Wilderness but was given a warning in the Chelan-Sawtooths. (What can I say? I'm forgetful). You just haven't been caught yet. Mikey will have my pass. I have a slightly expired one that looks almost identical. I'll give Hunt'nFish first dibs since I just PMed him about the pass. You can get passes at the TH for $5. The ticket is $100. I've forgotten about 20 other times to display the pass so you guys can do the math and decide for yourselves.