"This riverfront structure commands an impressive view of the Absalom skyline, and the Touched gather nearby to commune with the Prophet. There is a direct connection to the sublevels of Old Absalom here, and its endless supply of nanoblack. The architecture is constantly growing and transforming, rebuilding itself to an unknown purpose."
DM-Sentinel (whose full name is Sentinel) is a map appearing in Unreal Tournament 3 .