I am stuck in Grim Fandango. I really didn't want to resort to ask for help but I have tried and tried for hours and hours and I am going crazy!
I am in the Petrified forest and I know I have to bring the magic sign post over to the place with many exits that go nowhere and somehow drive through the tunnel it points to, but nothing happens! I tried many different ways of driving in, running over the sign post after travelling through a tunnel, going in the opposite direction, but nothing works! I know I have to use the sign post to find the correct tunnel or something but it doesn't work. I must be doing something wrong!
I would be extremely grateful if someone could help me out. Thank you very much.