Halo 3 Easter Egg - Get out of The Storm

Play through the level as you normally would. As soon as you kill the two hunters get ready to do this. Follow the path and you will see the ship crash. Look to the left. You will see an area across a gorge. Walk alongside the gorge until you get to an area that sticks out a bit. Grenade jump across and you should be on the other side. It is fun because you can walk through some buildings.