I think most of us here dream of creating natural (or un-natural) environments that we can then take virtual strolls thru. Simon Barle using the Unreal Engine has created just such a wonder:
https://www.youtube.com/watch?v=JPHf71VCWsY
Here's some links regarding his workflow and tools:
http://80.lv/articles/getting-macro-environment-right-with-simon-barle/
http://80.lv/articles/battlefield-environment-artist-on-creating-nature-in-ue4/
Now that is very nice. It is a fairly good recreation of Redwood Forests.
That's pretty cool. Thanks Doug.