big rigs is great and i want to suck his cock
You can edit every map with MSPAINT.T-H.bmp controls the hight of the terrain. Black is 0 and white is max hight.t-l.bmp controls the lights.the grazz, dirt and rock thingies control where the grazz rock and dirt textures are placed on the level geomentry, white is where its places, black is absent.pic here of my test.