Hey!
I got a little macro for you. It is quite simple, but may be useful after some experimenting.
It creates vertical terraces, that run from the peaks of the terrain to its valleys. 8)
These terraces aren’t immediately added to your terrain - you can combine them yourself with your terrain and maybe achieve some cool effects.
After all - it is still experimental.
http://www.ashundar.com/plug.php?p=browser&f=519
edit: http://nkblog.nkdev.de/?page_id=446
Comments and suggestions are welcome!