In this scene my goal was to recreate the look of a post-storm atmosphere in the mountains with thick fog and haze puffs. You can read a QuickTip on creating the atmosphere - the clouds in particular - in my post titled "Mist after the rain in Vue".
A good reference photo I took in the Summer of 2012 after a heavy rain in Hallstatt, Austria
Side view of the viewport to demonstrate the height and altitude of the cloud layers relative to the scale of the scene
Just a Terrain Editor shot of the terrain - though you don't see these details in the final scene, I'd like to showcase the power of GeoGlyph; QuadSpinner's new plugin for World Machine. This terrain was relatively easy to generate, but the details are impressive.