From 8th Ave. into Mountain Lake Park, circling to the west (first pix: eastside benches), detoured off the main Mountain Lake trail for a better berry selection around an old building foundation near the golf course.
Under the highway overpass (second pic) and 'round the horn to one of the park's newer stairways that ascends to the boardwalk (about 104 steps, counting several on the boardwalk itself): third and fourth pics.
Now I finally know the official name for what I've been calling the "dunes boardwalk" (thanx to a new trailsign at Battery Caulfied). This part of the Presidio's Mountain Lake Trail and stairway is called the Marine Cemetery Vista (fifth pic: the explanatory plaque between the benches). Next pic: the benches up here.
Crossed Battery Caulfield Road directly over to the Presidio Forest where a bunch of trees have been removed. There's a trail from Battery Caulfield between the dunes to the north and the forest.
I'm sure the rough-ish trails I was on (and off) in the forest will eventually be improved upon. Slogging through thick sand and ground covered with pinecones, found myself just above the Lobos Creek Boardwalk. Last two pics: From the forest down to the boardwalk.
Back out of the forest on the south side and along the Lobos Valley Overlook trail, out of the park to the bus stop at 16th Ave. & California.