Height fields and blender

Let me start by saying I LOVE BLENDER! Okay. Now for the question. I’ve been converted from Pov-ray to Blender because of the great animation features, however, I haven’t found a good way to do landscape in a way that resembles pov-rays height field object. I know about the displacement option in textures, but I can’t seem to get it any larger than 1.000 unit. Thanks for the help.

use noise(located in mesh tools) for a permantent hieght map. start wioth a flat plain, sub-D it a bunch of times then then add your hieght map a texture, after wards click the noise option a bunch of times till u get the desired elevations.