The a00jumps000_wn_a00mtunnels.challenge.gbx file you have requested: Tracks / Jumps n' Tunnels - 12.89kb is not available. Perhaps try browsing all files for the game TrackMania Nations Forever and upload any files you want to share or are missing. This is the only information we could locate:
Lots of jump and stunts are here for you to enjoy so dgetting downloading:-)
The original concept for this track was to make a lap race where you could go in a different section for the second run. Now it turned out to be a single lap race which sends you back and forth in a set of cool stunts and roads. It has custom intro, Ingame FX, Outro, music, and signs. Check out the outro, it's my first!