[Trigger] Random generate terrain height

[Megafyr]

I remember to have seen a tutorial on hive that taught how to make triggers to random generate terrain height. The terrain height was created in when the map was loaded, and each time it was random. I tested it and all looked really smooth even though it was random, but I deleted the map I had triggers in, and now I can't find the tutorial anymore.

Does anyone know where the tutorial is, how to make this system, or a similar system that created random terrain height in a map at map initialization? I will of course give +rep to people that help me, and If you create a new system I chose to use in my map, you get credits for it. Thanks for looking at it. : )

 

[Teelo]

This probably uses the function:

• Environment - Create terrain deformation: Crater

 

[ap0calypse]

You can try this:
Cannon Commander
It also generates the terrain randomly.

As far as I know it's unprotected (it participated in a contest, so the triggers had to be checked).