
I was playing around with gimp trying to make more interesting random terrains and came up with this. I wasn't planning on posting it but it's fun enough to ride that it seems like a waste not to.
The method used to create it:
1. Fill the background layer with solid noise. Dim it to 33%.
2. Make a new layer, set it to add mode and fill it with noise.
3. Add a mask to the new layer, noise it, and threshold the noise.
4. Lower the brightness to 33%.
5. Add another layer the same way.
6. Save it to terrain.png and set the min/max heights in terrain.hf to 10 and 100
7. In the MX Sim editor, smooth the entire terrain at strength - 8, submode - raise only a few times.
8. Smooth again at strength - 4, submode - assign.
Download here-
http://www.mxsimulator.com/tracks/antiearth.zip
Feel free to use this terrain as a base for a real track.