Postscripted, one week later:09 Feb.: Thought I would try a quick hand at some rock hunting, so I went out to Acton, supposedly an agate sight. Too much private property, so I crossed over SR14 to go up Red Rover Mine Road (North), dead ends again at, yup, more private property. Up Sand Canyon Rd. (this is rather nice, attractive properties, oaks), down Little Tujunga, home. Just a leisurely afternoon drive!!