I took some lumps for this one.
Like the man do say: "Who's that walking over my bridge?"
So, I am thinking the cardboard sleeping pad under the footbridge should have been a give away, but there is a troll under there.
I found this out when I grabbed the cache and saw it was opened and upright (I guess the troll wanted to allow maximum water access) and minus a beer(s)!
So here is what made it through the night, so to speak. I guess it is nice that the troll left anything, huh?
And, I can now admit that I had previously thought it was at the intersection of Franklin and Artillery (due to not doing my own research but relying on the garbled retelling of a hungover lady), and when looking for it the other day, I climbed Franklin on the fixed wheel bicycle, and that was hot and tuff, only to be denied entry at the gate to the Presidio. So, being "tricky" I attempted to skirt the perimeter towards Veteran's Park, and stay high so I could zip into PG and win.
Well, it made sense at the time.
That sucked and did not pan out, and all I can say positive about it was that I did not contract Poison Oak Poisoning and the Presidio does a fairly good job of keeping their fence line brush free. Fairly.
Anyways- how awesome to finally find a cache!