Hello
I can raise the terrain but I can not lower it
If I hold down the shift button, nothing happens
Any suggestion ?
You might be trying to lower it below 0.
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Normally terrains are created near the lowest level possible, which in effect prevents you from digging valleys or trenches below that height. A work-around is to use Flatten Terrain from the Terrain menu before you start working on it to set the base terrain level to a greater height, which gives you “leg room” to dig down. But if you didn’t do this, you’re basically stuck unless you export the heightmap to an image editor and brighten it. This will effectively raise the terrain, but can be problematic.
unquote
I did it, I set the base terrain level to a Greater height but it does not work ,either