Brian,

Here's a rather contrived example. It uses GC Water to mix between the blue and a gradient. GC Water looks for spots that are lower relative to the surrounding areas so it finds the erosion spots at high elevations too. I'm also working on a full GC Water tutorial for the next issue of 3DXtract.

BTW, if anyone was having trouble with the download, the C3 package for PC has been corrected.

Best regards,
Eric Winemiller
Digital Carvers Guild
3D plug-ins for Carrara
http://digitalcarversguild.com

Eric Winemiller
Digital Carvers Guild
Carrara and LightWave plug-ins