The biohalo.zip file you have requested: Maps Levels Missions / CE Maps / A to B Titles / BioHalo (1.1a) - 39.24mb 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:
Title: BioHalo v1.1aDescription: The Master Chief is trapped in a flood-infested city block, and must escape...Author: p0lar_bear---NOTES:This map is a SINGLE PLAYER MAP. If you attempt to load it as a MP map, Halo will crash. To load it, The Master Chief is trapped in a flood-infested city block, and must escape.