You may have to set your setting up to normal rather than easy for starters. If that doesnt work, your game may have glitched or the skull was moved by an exposion.
ok, go to youtube and type in "how to find all halo 3 skulls" then watch the video and get the skulls. yes, its that simple.
Sorry there arn't any, The only skulls are in "Halo 3" Which are used in "Halo 3 O.D.S.T."
find the skulls
Find them your self
what do you think retard they looked!
No you must find and claim them
find skulls and get achievements
Please visit the Gamespot game guide for Halo 3. There you will find all the locations of the Halo 3 skulls.
you can find a video walk-through on youtube.com
find all 13 campaign skulls
You have to find all the skulls in campaign mode.
They are skulls. idiot.