One way only

Like you need a road sign to tell you “Once in - You can never get out of the graveyard!”…

one-way-graveyard

The Lord of the Rings - Road Sign

Anyone remember the scene with the Balrog in The Lord of the Rings? Gandalf shouting out “You shall not pass!”. Apparently someone clever enough made this road sign to scare off drivers in the road ahead. Very clever if you ask me :)

You CANNOT Pass