The talk of the park is the upcoming demolition of a dam that has blocked the Elwha River and the upstream migration of salmon for 100 years. They managed to get tribal, business, national and state organizations to all agree and the dam is coming down. This is not the kind of thing that I ever thought of as reversible but they have enormous resources going into recreating the original habits and landscape. It would be great to see how it all works out in 100 years or so.