momotr0n can you provide an estimate of how many miles you had to drive from the turn-off off the 1 onto Willow Creek Rd all the way to where you started to see promising spots in your last photo (red dot sites)?
The entire drive once you turn off highway 1 onto Willow Creek Road was about 7.6 miles to the end where I camped. The entire ridgeline is about 2-3 miles long.
You can see a map on Caltopo that I made just for this route here.