astvitaliy1982 made a terrain mod for SH3, as well as doing a few "tiles" for SH4 for JapLances work on the Fort Drum mod. SH4 is definitely much easier to work with the terrain than SH3 is. However, there are a few caveats. You use GWX SH4TerrainEX to extract the desired 601x601 tile, which it puts a RAW file in the folder designating the Long/Lat location of under the Game /Data /Terrain /Data. You then open that with an app that can deal with a RAW file, such as Photoshop. As you edit the file, save it to a "native" format for the app you are using, such as PSD. If you save back to RAW, you can no longer edit that file, and you will end up with either "pillars" of earth at each of the four corners of the tile, or "walls", such as you describe Rick Fortens. Also, if you edit the file within 6 pixels of either edge of the 601x601 tile, you have to perform the EXACT SAME EDIT in the neighboring tile set. This can get very difficult, especially if you are in or near a "corner" of a tile, and might be dealing with 3 other files overlapping... I generally avoid editing near the borders altogether, unless absolutely necessary. Once you are finished editing your file, you Save As in the RAW format. Then use GWX SH4TerrainEX to convert from RAW to ZHF. It is best to be working outside of the game with this, but that can be difficult since you do have to load the terrain database and the color map in (see the GWX SH4TerrainEX pdf instructions), but you do want to put that Terrain /Data folder in a mod of its own, and "cut" the RAW and PSD files out of it, Pasting them to a folder you will remember for future edits - but again, only edit the PSD file and not the RAW. Something happens to them after the edits... One of the big things to remember is the learning curve here, and EXPERIMENTATION. It can be quite frustrating at times doing this kind of work
