re-creation of the fort at helms deep from lord of the rings 2: the two towers. great for all kinds of gametypes, and looks awesome too.
It looks like you forgot to include pictures, and a download link, good sir. To post pictures, upload them into photobucket/flickr/whatever and copy-paste the link with the IMG tags on them. A download link is just the link to your map on bungie.net You might also want to check if your map is a Halo 3 map or Reach map, a lot of people are posting Reach maps in the Halo 3 sections nowadays.
He posted this in the Reach section too, so I assume it's a reach map, there is no need for 2 threads