The weird_groundz.challenge.gbx file you have requested: Maps Levels Missions / Tracks / Island / U to Z Titles / Weird Groundz - 17.03kb 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:
Here's an island by night. Formerly building to run several laps, after all it's one lap. The start is the finish and the middle section. From 3rS4Tz.