Halo Easter Egg - Shut Up Message in Beaver Creek

Start in Beaver Creek with a sniper rifle. Then go to the red base, to your right there should be a path. Take this path; at the top there should be a semi-arch. Jump onto that arch and turn left. Take a few steps back and zoom in. You should see the word up. Then look up. Finally you should see the word shut. If you can't see it your game glitches.