I'm having fun exploring surfaces. Just for grins, I set the Index Contours to 1' and the Intermediate contours to .2'. Starting to look very Max Escher-ish.
Ive got my pond sort of looking like a pond, though; the road "breaklined" to look like a road. Still working on the gully leading into the pond, and the culverted path across that gully. 
Most of my 3D surface experience is with mechanical engineering/CGI sculpting programs like Maya, Z-Brush, Rhino etc., It seems some of the tools available there would be applicable to land surface modeling. With some of those programs you can sub-divide triangles, grab individual triangles and "pull" them up or down as needed to "sculpt" the surface as needed. One might think that doing so makes the output a work of fiction rather than a faithful replica of the surface, but if the result is a more accurate representation of what you know is really there, then...why not? With this software (TPC), all you can really do is use breaklines...I don't think you can even "flip" triangles. Enjoying the ride though.
