Just a muck-about in Source Filmmaker using Xiron's Classic LEGO Games model pack. I guess if I wasn't lazy, I would make an animation out of this, but for now (and possibly forever) it'll be a picture.
(NOTE: The map and the rocks/plantation in the image are not from Xiron's pack)
Xiron for Classic LEGO Games Model pack
Valve for TF2 content (Rock walls and cactus) and Portal 2 content (plantation around cactus)
Whoever-it-was for the 'sand_void' map