I'm planning on creating a fairly large outdoor map with rock walls and caves.
What's the best method for piecing together a map like this? If I wanted to create underground tunnels, and realistic looking cave areas, is it better to flesh out the areas with block brushes, then put displacements on top of them like blankets...or what other ways are there to do this?
I haven't had much success working with displacements in the past, and usually end up with very unrealistic looking pieces of junk. :/
Any help would be appreciated!