Via the band's Twitter feed: "Find this cap somewhere in downtown Seattle."
I have no idea where that is. Maybe you do? If so, you might be getting some free tickets to tonight's show. Follow Soundgarden on Twitter for the latest clues.
UPDATE: Get thee to Pike Place Market!
More updates after the jump—it appears
the magical bottle cap is still out there. Somewhere.
There is a winner!
And now a vague picture of a fish...?
To the gum wall in Pike Place!