How do i make cave walls?
Yea those asymmetrical cool cave walls... i would really like to know 
I've searched and searched...
They are displacements, make a room with 4 sides and start displacementing
Mapping with Hammer and not know displacements? :O
Yep its strange right? I have been making lots of maps, and also still dont know anything about scripting either
If you started with hammer for portal 2 it isn't really strange 
Displacements are not widely used in custom portal 2 map
Hey Beecake!
Well, it is truly dificult to believe, mate! I remember many of the thousands of tutorials I watched or read talking about displacements. Also as spongylover123 said it's in thee VDC (didn't you read it completely yet? I did...).
Anyway, check out these following tutos, talking specifically about caves:
useful tools and stuff here on TWP 
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[/spoiler]Heyy very nice Ima check it out, when i get the time...