We found out the artwork was designed by Invisible Creature for The Bonfire Sessions sponsored by Jansport, so we emailed the Seattle agency and asked for a copy. Luckily, they had one left, stowed away in their basement.
Once we told them about how the Cave Singers and Red Bull got us through a myriad of late night pushes, they decided the poster should be ours.
Good Karma. Good Creative. Thanks Creature.