In halo 3 there are 13 Skulls to find I've found 10 so i'll get the others off the internet i'll inform u of 3 today then tommorow and so on
1.Iron
You can find this skull in the end of Sierra 117 dont go in to the pelican but go on the bridge you will see a big cament rectangle go on it then hop on the ledge of the building follow the ledge till you get to the end and you will find the Iron Skull
2.Black Eye
in the very begining of crows nest jump on to the green wepon holder in the same room as you start in jump on to the red beam then jump om top of the pipe the Black Eye Skull is there
3.Tough Luck
Tsavo Highway on the Tsavo Highway theres is a pipe when u get to the second yellow latter go to the lower level a slab of cement is there holding up a piller jump on that then go to the end of it look to your left there will be a piece of rock with the skull on it
