The bloodgulch_1208884487.map file you have requested: Maps Levels Missions / Bloodgulch Maps / Halo Trial Bloodgulch Mod - 13.79mb 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:
1) All teleport's access are near "Health Packs".
2) Cliff access is by tree in front of each base.
3) Once on cliff, access next cliff via teleport near "Health Pack". The last cliff will have teleport access down to top of base. Other Halo Trial Cliffs And More