I have a slide I took back in 1969 or so. For a few years now, I have been trying to remember where I was when I took it. I knew it was in or near Walnut Creek, CA where I lived and it was also near Mt Diablo. For the longest time I thought I had taken this shot on the east side of Diablo on a drive I used to take on Marsh Creek Road. I’ve tried traveling down Marsh Creek Rd in my Oculus and just could not find this place. Then I got the bright idea to collect the entire roll of slides I took that…