The Boundary Trail No. 1 actually starts here at an intersection with the Hummocks Trail about 4 1/2 miles west of the Johnston Ridge Observatory (and several hundred or a thousand feet in elevation below the Observatory.) We did not hike from here to the Johnston Ridge Observatory. We drove there in the car.
Hummocks TrailMount St HelensvolkswalkvolkssportWashingtonwalktrail2007