Sangue Nero is a symmetrical map created in the Skybubble of Sandbox and is a decently small map, suited mostly to Team asymmetric games.

Hello, I'm The Oreo, and this is my (and don't run away when I say this) very first serious Forge map, Sangue Nero. Although this is a first real attempt at something Forgehub post worthy, I've still tried with all my abilities to introduce professional forging aspects into my map with a large amount of liberal interlocking, and somewhat decent aesthetics. But with that said, in my mind this is very much a "V1" so any of you with more experience than me at this, please feel free to leave me some well structured criticisms and I will go about editing my map to the best it can be asap.

Anyway, without further adieu I present to you:

Sangue Nero
Italian translation - 'Black Blood'
http://www.bungie.net/Online/Halo3UserContentDetails.aspx?h3fileid=68542142

Gametypes Supported:
The map was made (in accordance to the accompaning story) with One Bomb in mind, but has been set up to support One Flag, Multi Flag and FFA Slayer.
Recommended players: 2 - 6

Weapon Loadout:
4x Assault Rifles
3x Battle Rifles
3x SMG
2x Carbine
1x Flamethrower
1x Sniper Rifle
1x Fuel Rod Gun
1x Mauler
1x Needler
1x Brute Shot
1x Bubble Shield
1x Regenerator
An assortment of grenades (excluding Firebomb) placed as I saw fit.

Vehicle Loadout:
1x Ghost - Appears in all gametypes.
1x Warthog, Chaingun - Appears in Asymmetric gametypes only.
1x Hornet, Transport - Appers in Asymmetric gametypes only.

Story:

Soon after the events of Halo 2, a mysterious Forerunner structure appeared within Earth's own solar system, high in the air above a largely uninhabited desert planet. Both UNSC and Covenant forces investigated to reveal it to be some sort of massive power station, emmitting enough energy to potentially destroy all life within an area estimated to be 5 light years of distance.
With this information, Covenant Hierarch, The Prophet of Truth, decided the most logical step toward the Great Journey would be to command this structure's power and fulfill what they believed to be its fated purpose, to wipe out the traces left of humanity.
Commander Greg Orion of the UNSC, stationed on Earth, created the solution to their impending armageddon and analysed the weak spot in the site to attack, that would cause what he called "massive damage", and give humans more security in the bounds of Earth once again.

With clear intentions on both sides as to what to do with the structure it is now a matter of who will win in the fight on the temple itself.
Covenant or UNSC. Only one thing remains clear, whoever emerges victorious will change the tide of the war permanently.

Screenshots:
(Action shots/More map shots coming soon, my XBL is AFK.)

(General Overview - Shows Vehicle spawn setup, Blue base (Attackers): closest corridor and Y-Tubes, Red Base (Defenders): Large structure with Kill Balls on top)

(View from side Hallway - Looking into Crypt)

(Inside one side of Blue hallway - see through to other side. Middle is Flamethrower/Bomb/Flag spawn)

(Inside Crypt/Red Base - Shot one, lower.)

(Crypt/Red Base - Shot two, above)

(General Overview 2 - Shot from right/Ghost side. Shows entrances to both bases - Symmetrical on both sides excluding Ghost/Warthog and ramp setup. Power Weapons: Sniper spawn on center platform, Fuel Rod spawn infront of Teleporter.)

Download Link:
Halo 3 File Details

Also, special thanks to the testers;
Chickenat0r
Egginat0r
Yanqui
Chick3nator
Ch1ckenator
(Yes they're all quite separate people.)