A terrific hike even on a hot day. The local history of the twin tunnels was fascinating. A wide, smooth paved road was a moderate walk up for 2 miles with shade to be found even on a sunny day. Bring water!
Cyclists share the trail, but the pavement was wider than rails to trails paths. It was lots of fun to walk through the tunnels!
Parking pass was $5 (honor system) at the Oregon State Park Trailhead.