camera{rotate 140*y translate<0,0.2,1>}sky_sphere{pigment{wrinkles}}#declare f=function{pattern{wrinkles}}height_field{function 2999,2999{f(x,y,z)}pigment{rgb 1}}union{sphere{0 0.4 pigment{rgbf 1}finish{specular 1}}light_source{0 rgb 1}translate<0.7,0.7>}