This graffiti is also located on the junkyard. After your conversation with Rachel inside the truck you come automatically in a little shack where you have to change your clothes. Before you do this, turn right and go to the wall and the option for the fourth graffiti appears.
00:08 - Optional Graffiti #1 (Stagehandwriting)
00:44 - Optional Graffiti #2 (Radical Piratical)
01:39 - Optional Graffiti #3 (Feels on Wheels)
02:17 - Optional Graffiti #4 (Canon Wall)02:45 - Optional Graffiti #5 (Wishlist)
03:23 - Optional Graffiti #7 (Tread Harshly)
03:53 - Optional Graffiti #6 (Friendly Forest Friends)
07:12 - Optional Graffiti #8 (Permanent Record)
08:38 - Optional Graffiti #9 (Vanity Fare)
09:21 - Optional Graffiti #10 (Creature Feature)