Updated!!! Monday May 18th
More Screenshots, Explanation

Hello everyone this is my first map I will be posting to ForgeHub so if I do anything wrong or the map looks like crap, be gentle lol. Anyways down to the juicy stuff.

Weapons
Sniper Riflex4
Rocket Launcherx5
Spartan Laserx3
Fuel Rodx3
Machine Gun Turretx2
Missle Podx1
Vehicles
Bansheex2
Hornet/Transportx2/2
Ghostx2
Mongoosex2
Scorpionx2
Warthog/Gaussx1/2
Equipment
Bubble Shieldx3
Active Camox1

This is the underground base. There is a maze set up to get to the flag. Players spawn on top of the maze. Portals lead to middle level. Also the image that looks like I'm just pointing into a corner is where the flag is located.
Changed formatting. Got lots of helpful feedback. Also, since the helpful feedback freed up some budget, I was able to put decent set up in the middle.

This is the middle level of the map. After some balancing issues and budget issues I think I got the middle level right, or at least better for anybody who has followed this map. The base that is grounded leads to the underground maze. The mario platforming base goes up, meaning it leads to the sky base.

This is the sky level base. Pretty straight forward on how to get there. Just make a jump with the mongoose. All the teleporters take you to a random teleporter in the sky base"middle level". Hopefully you can see where the flag is located.

Thanks for checking out the map. I made this before I knew about merging, interlocking, and all of that. So it may not look "pro" but I think it will be fun. I would highly recommend playing with as many players possible because of the size of the map. Any suggestions for future projects would be greatly appreciated. Also this is a CTF created map, hopefully that clears up the "What is the point of this" question. Thanks a lot.

http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=78742689
P.S. Having some troubles with editing the page, sorry if it is lengthy to look at.