Citadel
From Halopedia, the Halo wiki
Template:Ratings Template:New Content Template:Multiplayer Map Infobox
Citadel is an upcoming Halo 3 map that will either be included in the second part of the Mythic Map Pack, or it will be shipped in Fall 2009 with Halo 3: ODST.
Skull
This map has a skull for the multiplayer achievements. When found it unlocks the achievement, Citadel Skull. It has an image on the skull that resembles a Forerunner glyph, indicating that it takes place on a Forerunner terrain or, given the Covenant's use of Forerunner glyphs, that it is Covenant in aesthetics.
File:CitadelSkull.jpg 
this map is probably based on the covenant at the citadel but could be the covenant citadel like in halo wars.citadel will be realeased 31st march 2009
the image at the top is the citadel from the campaighn mission "the covenant"
