We decided to try out this trail since we were going to go to nearby Lacy Point as well. I believe that normally you might need to either have a campsite reserved or pay a boat launch fee to get in, so access might not be that easy. Contact the park admins for details.
This is a short out and back that total 1.2 miles. The Juniper completely covered the trail throughout. Several bridges traversed creekbeds along the way. The going was easy and there is a good interpretive trail guide available (click on alternate map link above).
Not really worth driving out for in and of itself, but it you're boating or camping here this is a bonus activity.