Template:Ratings The purpose of this page is to show you a small programming oversights made on the campaign level, The Ark in Halo 3.
How To
Start the level at the rally point where Forward Unto Dawn drops off the three Scorpions. Play through on the tanks until you destroy the Scarab. After the walker is safely destroyed, grab a Grav Lift in the small structure and have your friends do the same if you are in co-op. Then, Grab a Chopper or a Ghost and drive back to the building that you just came out of. You should look for a small camp site with a comm node and a supply case that held a Fuel Rod Gun. Face the Crashed Scarab. Turn left and you should see a large mound of dirt mound with some trees on it up against the Wall. The Chopper's or Ghost's boost should get you up there. Crouch Jump up onto the Wall. Turn left and walk up the wall. You should feel the Invisible Barriers Pushing you off the wall. Keep walking forward while resisting the push. You should eventually slide down slightly and you can continue walking. You'll drop down onto the top of the building that you came out of. Keep walking into the invisible barrier and eventually you'll go past it. And there you go!
You can also get on top of the cartographer by grabbing a Chopper and a Grav Lift. If you stand on top of the platform in the middle of the area you fight the scarab in and look towards the spire where you can get inside look to the right a bit until you see a cliff, go to the cliff and park the chopper against the wall. Make sure that the chopper is facing the cartographer. Now you'll need to place the grav lift on the edge of the cliff and drive your chopper into it, make sure you boost in mid air or you might not make it. If that doesn't work you may have chosen the wrong cliff. Once you are up there you can climb up the Cartographer using your chopper as a step and crouch jumping.
What can you do
If you look up, there is a bridge going across the walls. You can search around for the way up higher on the wall. Use the Grav Lifts To help you if you can't jump up high enough.
Once you're on the cartographer you can climb up and see the other side of the cartographer even if it's just very rocky. If the [scarab] is still working you can jump onto it or snipe down everyone on it.
Also, If you continue to move, it is possible to see the backside of the spire, which is partialy invisible, alowing you to walk across invisible floors, or even possiby get inside the building from behind.