The islandhop.rar file you have requested: Modifications / CE Map: Island Hop - 7.6mb 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 Basically this is two big islands with boats as a way to get from one to the other. Also theres an underwater walking path that you can get to as well.