To followup from yesterday’s post. The method I recommended is not worth it for smaller areas. Just big sites. So probably not useful in this case but here it is anyway:
Import height map using Bitmap to Mesh extension. I get my heightmaps from a photoshop plugin I bought called Terrain Generator. There may be other free sources out there but this one is easy so worth some expense.
Here it is without height map image texture.
Google maps image so I know where things are on the terrain mesh.
Used geo-locate function to get existing terrain from Digital Globe to match terrain height. When you import from Bitmap to Mesh it doesn’t know what the Z Value should be so you set it manually upon import…then adjust to match Location Terrain.
Ran Tig’s Contour Maker extensions. Took a long time to process on such a big site. I should have used something smaller for this demo. Live and learn.
Contours without the mesh.
Lastly, here is detailed view. A bit choppy so again, works better from a distance.
Dropbox - File Deleted here’s the file if you want to play around with it.