"The previous occupants of this island left it with stones that should have never been turned."

Plymouth is an asymmetrical map, best for teams of 6-8. It is situated on the island of Forgeworld, and it takes up about 2/3 of it. It supports all gametypes, with the exception of Race (rally is supported), Invasion, and Invasion Slayer.

Fly-through:
YouTube - Halo: Reach Forge Map - Plymouth

Red base is in the same general location as it is in Paradiso, while blue base is near where the Laser spawn is.

Most structures are very similar. They have a platform, usually with a weapon on them, with a roof, and a decorative piece on top.
The pictures (below) will show in more detail.

Supported Gametypes

Slayer Variants
CTF Variants
Assault Variants
Infection Variants
Territories Variants
Stockpile Variants
King of the Hill Variants
Headhunter Variants
Oddball Variants
Rally

Weapons (Spare Clips/Respawn Time)

6x DMR (2/30)
2x Rocket Launcher (1/150)
2x Sniper Rifle (2/90)
2x Mounted MachineGun
4x Plasma Grenade (NA/15)
1x Concussion Rifle (2/30)

Vehicles (Respawn Time)

4x Warthog (60)
4x Mongoose (30)
2x Ghost (45)

SCREENSHOTS:

Main Overview:

Red

Red Half Overview:

Red Base Front:

Red Base Back:

Red Rocket (eww...)/sniper spawn:

Misc. Red Building:

Neutral

Concussion rifle Spawn:

Blue

Blue Half Overview:

Blue Base:

Blue Base Back/Garage Back:

Blue Rocket Spawn:

Blue Sniper spawn:

Blue Base Sideshot:

Misc. Blue structure:

I plan on later closing off the Concussion Rifle spawn and the Red half (leaving only the blue half) and adapting it for Smaller teams and FFA's in a new map.