global_settings {max_trace_level 99}
#macro C(D,R,S)
cylinder{-D*9,D*9,R,-S pigment{rgb D}normal{granite}}
#end
union{box {-7,7finish{reflection 0.97ambient 0}hollow}
blob{C(0.8,99,-9)C(x,7,99)C(y,7,99)C(z,7,99)}
light_source{-1 2}translate -2rotate 15}