THIS CACHE IS NOT AT THE POSTED COORDINATES. DON'T EVEN THINK ABOUT COMING TO THEM.
This is a bonus cache to the adventure lab "Highlights of SF's Richmond District." After completing each stage of the adventure lab, you'll get a bonus letter. Take each of these bonus letters and unscramble them to get a bonus word. Enter it in the link below, and if you get it correct, it'll give you the coordinates and a hint.
https://www.certitudes.org/certitude?wp=GCAA1E7