Good example of outdoor/forest?

Looking for some inspiration and ideas for outdoor creation, can anyone point me in the direction of a good wad that demonstrates this?

Zdoom please, no GZdoom :D

i only know 1 forest:
http://www.youtube.com/watch?v=qkMonYgb_i8

can't watch youtube, on dial up :(

'ghoul's forest'
(not sure version 1/2/or 3)

thanks :D

If anyone can think of any more (or has made one) don't hesitate to post them.

http://wadhost.fathax.com/files/dieblieber3.zip

Phocas Island 2 has some of the best forests around.

Action Doom 2 has an awesome forest area. It's done in a cel-shaded, comic-book art style, rather than the standard Doomy appearance, but I don't think that'd detract from its usefulness as inspiration.

Grove

outdoors (not forest though) using large tree sprites apparently:
http://www.doomworld.com/vb/wads-mods/43171-dawn-of-reality-gzdoom-big-city-map/

I always found mountains to be much easier to make than trees and stuff. Not that trees are too hard to do, but they definitely are an eyesore if they are not done with the right textures.

Hmmm... TV1998 (http://www.doomworld.com/idgames/index.php?id=13049) had a good forest level.