When I see a tunnel, I have to hide something! Here's the 6th in my Tunnel Vision series. It is a quick multi. The container is located very close to GZ (Ground Zero).
When you arrive at GZ, have a look around and try to figure out where the water flows. One place is into the San Diego Creek. The other helps polish the pollutants and is where? The answer is 3 words. Enter these 3 words, all as one word without spaces, into the checker for the final coordinates.
You can validate your puzzle solution with
certitude.