The big_canyon_3.zip file you have requested: Maps Levels Missions / CE Maps / A to B Titles / Big Canyon 3 - 12.47mb 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:
Description:A large, wide canyon with versatile vegetation that is used as a quarantine for the UNSC forces that were driven crazy. To make them have fun, they included a bunch of things:-Lamborghinis;-Warthogs;-Helicopters;-Wasps:-Ho A large canyon where the UNSC sends Marines that went crazy from the battles on Halo. There are many vehicles on this map, including: Lamborghinis, Helicopters, and Hover Tanks, along with the other vehicles.