tyflier
[Insert Witty Commentary]
The shadows are definitely natural, but they seem too dark...
But like I said, I'm using one of those old, bulky screens right now so it probably looks just fine. I should really hook up the newish screen my brother brought over weeks ago.
I think it's probably your monitor. I use a color-calibrated HiDef LCD flat screen, and I can see the details of the rocks inside the shadows. They're just regular shadows...