The area55.zip file you have requested: Maps Levels Missions / CE Maps / A to B Titles / Area 55 - 38.05mb is not available. Perhaps try browsing all files for the game Halo: Combat Evolved and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Halo, visit Halo2.filefront.com The sequel to area 54. as you can obviously tell from the other 3, there are lots of AI people to kill. but they are also very tough as usual.