The devilscanyon.zip file you have requested: Maps Levels Missions / Devil's Canyon - 10.76mb is not available. Perhaps try browsing all files for the game Halo 2 and upload any files you want to share or are missing. This is the only information we could locate:
When you get through downloading the map, because it is in zip format you have to extract it.To do this, double click on the folder you downloaded, now you should see the map, and the readme file. Click the button above them all that says, Ex This was uploaded for you guys who have slow internet connections and don't want to download the whole map pack.