realistic landscape

its a subdivided plane with 3 displace modifiers.and every displace modifier has a different texture.i also used vertex groups so the displace modifiers will have different effect on certain areas of the plane

render view:
http://a.imageshack.us/img825/3870/landscaperender.jpg

solid view:
http://a.imageshack.us/img810/8504/landscapesolid.jpg