Quiet getaway near Portland

I biked to this campground from my house in Portland. It was a lovely ride. There is a long, long downhill to get to the campsite, but wow, is it beautiful! Very peaceful. Lots of wildlife. I watched a woodpecker breaking open a log for over an hour. It was such a peaceful getaway. It gets you out of the hustle of city living, even if just for the night. The downside is that dogs are not allowed, but I don't take them on my bike anyway.