/* Farms can only generate above sea level (height > 0) and below 'snow_line_height - 2'
         * which limits minimum snow_line_height to '1 < snow_line_height - 2', thus '4'.
         * Forests can only generate above 'snow_line_height + 2'
         * which limits maximum snow_line_height to 'highest_height - 2'. */
        _settings_game.game_creation.snow_line_height = Clamp(snow_line_height, 4, max(4, highest_height - 2));