Delta Halo Vacation

The Delta Halo Vacation is two separate glitches on the Halo 2 Campaign level Delta Halo that allow players to exit the map's boundaries. There are two ways to get out of this map, one on foot, and one in a Ghost.

On Foot Method
To get out of the level on foot, at the start of the level, go up to the area where the Shade turret is, and instead of heading right to the Shade, go straight towards a few rocks, and then jump over the little hill, and stay to the far left of the hill and walk up. You are now out of the map.

Ghost Method
This method requires a little more time, because you have to stay for the entire first part of the level. When you get to the area with the bridge, lower the bridge, and get in a Ghost. It's your decision whether or not to take out the Wraith. Once over the bridge, immediately look to your left. The rock wall should be slanted. Boost up it, carefully move through the 2D grass, and then once on top, you're out of the map.

Other Stuff
The Ghost Method is the most dangerous, because of the fact that if you leave the ground and start falling, you will most likely die. It is also the fastest though. You can go into the water on this level.