The tunnel_trouble_3_9_rev.challenge.gbx file you have requested: Maps Levels Missions / Tracks / Island / Q to T Titles / Tunnel Trouble 3 - 4kb is not available. Perhaps try browsing all files for the game TrackMania: Sunrise and upload any files you want to share or are missing. This is the only information we could locate:
A pretty quick race, but improves your skills in the tunnel world. The end may be a bit aggrevating, but when you come out of the tunnel, turn LEFT.