The chaos_lane.challenge.zip file you have requested: Tracks / Complex / Chaos Lane - 15.85kb 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:
It's a fairly long track with no real base, other than "Slightly Cruel". It's suspended entirely above water, and as such, is very unforgiving if you happen to try and take a corner too fast and launch yourself skywards. Sorry about the lack of picture, if there's a few requests I'll try and get one, and I'll have one next time. Enjoy!