How can I make a mirror effect on the terrain?

How can I flip an object on the terrain (to mirror effect) or in other words How can I make a mirror effect on the terrain?

With reflection does not go. Or?

There's a shader and demo project that does this here: http://www.unifycommunity.com/wiki/index.php?title=MirrorReflection2

Hope that helps.

No funktion! no find the effects