        texture{ pigment{ color rgb<0.85,0.35,0.05> }
                 normal { pigment_pattern{ wood frequency 5 
                                           sine_wave turbulence 0.05
                                           color_map {[0.0, rgb 0]
                                                      [0.2, rgb 0.5]
                                                      [0.8, rgb 0.5]
                                                      [1.0, rgb 0]}
                                           rotate< 90,0,0> scale 0.5}
                           0.15}
               finish { diffuse 0.7 phong 1 reflection 0.2}
               } // end of texture ----------------------------------------------------
