I will reconsider some boosting of the whole geography with Height Point tile generation (where possible). That's because I could write a code that pretty easily handles the steeps and such. Check the shot. There's an easy way to add valleys too now so I'm thinking about using the valley thing or adding Height Point tiling to the Plain and such. But I'm leaning towards adding Valley and leaving plain as it is - and add a generic function to the Place root class that gives the height and such things if a Geography will need data outside its boundary (to fit the tiles together at the edge).