You could try applying a bump and Displace map to the ground plane. The problem there is that you can't see the effect of the Displace map until the picture renders, so some of your details might unde up UNDER the swollen displaced ground plane.

mo·nop·o·ly  [muh-nop-uh-lee]
noun, plural mo·nop·o·lies.
1. exclusive control of a commodity or service in a particular market,
or a control that makes possible the manipulation of prices