My wife and I stumbled upon this place while just driving aimlessly on our honeymoon. I grew up in Washington and didn't know this place existed. They have a really cool assortment of old torpedoes and other undersea equipment.
That picture must have been taken in Spring with all that greenery and how far out the waterfall is hitting the bottom. You can hike to the bottom on the right of this picture.
I got married in this park.