This is a very short and quick Multicache. The cache is not at the posted coordinates.
I have some very fond memories of geocaching in this area. My 500th find was at Scary Dairy. I have made a few videos of some of the hikes. But alas, it appears that CSUCI (aka CSucky) now owns the land and has imposed a "Permit Required" rule, which is fine. However, their "Scan Here" QR Code does not work, so there is no convenient way to obtain the permit. There appeared to be an Iron Ranger here at one time to collect fees, but only the post remains; that's what you will find at the posted coordinates.
Enter what is written on the remnants of the Iron Ranger into Certitudes to get the coordinates for the final.
You are looking for a pill bottle that is a typical and atypical hide.
You can validate your puzzle solution with
certitude.