So this may sound like a hopelessly naive question, but is it legal to just randomly camp in some part of the wilderness, or must you stick to designated campsites and/or get a permit? It's been, well, a few decades since the last time I went camping and mostly what I remember from my family trips in Oregon was just pulling off the side of the road, hiking in a bit, and setting up a tent next to a river. I guess I'd be surprised if that were still an option, but the prospect of sharing a campsite (or having anyone else within at least a mile) doesn't sound even remotely appealing.