Terragen Landscapes: Frequently Asked Questions Q. How do I increase the cloud cover ? A. Increase the Cloud Density slider in the Cloud Dialog. Q. How do I create a low lying layer of fog ? A. Set the Simple Haze:Density setting to a high value (greater than 90%) and the Simple Haze:Half height setting to a low value (less than 50m - the exact amount will depend on the scale of your terrain See Also: Simple Haze Q. I do I get rid of the black gaps at the edge of my sky. A. Increase the sky size...