TerrainHeight

public static float GetTerrainHeight (int x, int z) { //Get the height at each corner

            //Mathf.PerlinNoise gets a value between 0 and 1, so we have to multiple and add to get a value
            //between 60 and 70
            return (float)terrainHeightRange * Mathf.PerlinNoise((float)x / 16f * 1.5f + 0.001f, (float)z / 16f * 1.5f + 0.001f) + baseTerrainHeight;

        }