Converting a mesh to terrain

How can i convert a mesh that is a terrain created in blender to a unity3D terrain without allowing unity to smooth out the terrain? i need it to be just as i exported it out of blender.

Here is a example.
The ball on the right is what my mesh looks like (I want it like that).
And the ball on the left is what my mesh looks like after it is converted into a terrain.
http://www.sketchypictures.com/media/2012/07/circles.jpg

You basically can’t. Unity terrains use HeightMaps. Mesh terrains are un-restricted. So, it’s like converting a BMP to a JPEG; it’ll never be lossless.

What you can do instead is just use the mesh as your terrain. You may need to write some helper classes to do some of the normal stuff terrain does, but that’s likely your best bet if you want 100% fidelity.

Just found this on another similar post: http://wiki.unity3d.com/index.php?title=Object2Terrain