I used the elevation data from keep on the borderlands to test out DEM creation/manipulation. I used a ANUDEM interpolation tool in ArcMap, and from that I constructed a hillshade. below the original is is shown transparent over the hillshade both with and without color.
The keep itself
The Caves of Chaos
I imported it into ArcScene so you could see it from different perspectives.
view from the road approaching the keep