rotate terrain around central x,z point

Hello.

The topic says it all really :o) I have a terrain that I want to be able to rotate around it's centroid - any ideas?

(As you can probably tell, I'm more than a bit rusty with 3d stuff)

Goodbye.

You could create a pivot, parent the terrain to it on creation and just positionentity the terrain to offset it to center.

Can't think of an easier way.