Rotate the terrain a slight bit and have fun. Things get freaky with even a little rotation.
rotation = "0 -1.04659 0"; is quite a bit, and angled like a giant hill without too many errors, but rotation = "0 0 0.1"; will create some problems.
From a valley - dual terrain map called 1V
Code:
instant SimTerrain "Terrain" {
tedFileName = "FreeForAll.dtf";
visibleDistance = "500";
hazeDistance = "450";
hazeVerticalMin = "-NAN";
hazeVerticalMax = "1.26505e-38";
perspectiveDistance = "10";
screenSize = "40";
contGravity = "0 0 -15";
contDrag = "0";
contHeight = "10000";
position = "-150 -3072 -557.553";
rotation = "0 -1.04659 0";
};