From the Village Games Forum, written by Grand Master Mike:
I had a few questions about terrain last night, so I wanted to clarify the situation.
Each player is responsible for 5 terrain areas.
Two of the terrain areas are "public". Three of them are "private".
The public terrains are the ones listed on the campaign signup sheet. There are 12 public areas. Terrain elements can not be shared between public areas.
The private terrains are areas that you make up yourself. Terrain elements can be shared between private areas.
Here is an example:
Mike picks "Shore of the Esil's Ocean" and "The Green Vale" as his public choices. For his private choices, he picks Forest, Boarder Town, and Grasslands.
The public areas are described as follows:
Shore of the Esil's Ocean (Beach)
Min number of terrain pieces: 2
Normal: Woods, Broken Rock, Ruins, Tall Bushes, Hut.
The Green Vale (River Land)
Min number of terrain pieces: 4
Normal: Woods, Hills, Thick Vegetation, Bridges
For Esil's Ocean, Mike decides to make 3 items: Woods, Broken Rocks, and Ruins. He also needs to make an area of StickyWeed.
For the Green Vale, Mike decides to make 3 Woods and 2 Hills.
So for the Public terrain, Mike needs to make a total of 4 woods, 1 Broken Rock, 1 Ruins, 2 Hills, and 1 StickyWeed.
For his private areas, Mike decides to set them up as follows:
Forest: 4 Stands of woods, 2 Ruins
Boarder Town: 2 Stands of Woods, 4 buildings
Grasslands: 2 Ruins
So for his Private terrain, Mike needs to make a total of 4 Woods, 4 Buildings and 2 Ruins.
Combing the private and public builds together:
Mike needs to make a total of 8 woods, 1 Broken Rock, 3 Ruins, 2 Hills, 4 Buildings, and 1 StickyWeed.