Add snow and sand dune environments

Alpha Net 11.2.7

1 Add sand dune tiles

2 Add distant view of sand dunes

3 Add mid-range view of sand dunes

4 Add walls to sand dunes

5 Add vegetation to sand dunes

6 Add snow tiles

7 Add distant view of snow

8 Add mid-range view of snow

9 Add walls to snow

10 Adjust the distant view to a gradient

11 Adjust the mid-range view to a gradient

12 Add wallpaper to a gradient