Scott, when you say "you wound up at the top of a mountain", was it a normal lapping track, or was it one of the rally-style single stages? If it was a single stage, maybe you're thinking of something like Corsica or Jasper? Was it a real-life track, or fantasy?
Try going to the GPL Alternative Track Database (http://gpltd.bcsims.com/
), using the advanced search, and setting the track type to "rally". That should show you all the tracks of that type.
Another tip - when you're looking through the track database, there's a picture at the bottom-right of each entry which shows how flat/hilly/mountainous the track is. Maybe that will help you find the one you want?
If it was a normal lapping track, maybe it was something like Harz? I hope you find it!
Edited by Saiph, Jun 14 2015 - 05:03 AM.