I picked up the Heather Park Trail at the top of the Switchback Trail. My final destination was the trailhead at the Olympic Park entrance. There are two steep climbs on loose rocks to the ridge top that are challenging mostly because the trail is not marked with cairns. Because of the loose rock, it's not always obvious where others have traveled. As I dropped down into the bowl from the top of the Switchback Trail, I had good sightlines of the trail. But once I got into the bowl, I couldn't see the trail leading to the ridge. I hiked what I thought was the trail, only to find myself ankle deep in loose rocks on a steep grade. Not fun. The park service really needs to do a better job marking this section of the trail with cairns. Still, you'll enjoy spectacular views on a lightly-traveled trail. Once you cross the final ridge at the Heather Park campground, you'll descend to the park entrance via four miles of switchbacks through dense forest. I hiked this 10-mile route (from Hurricane Ridge Visitor Center to Olympic Park entrance) solo, something I wouldn't recommend for the casual hiker.