If we consider "decent-looking" a landscape viewed right from above, then
the code can be shortened even more:

light_source{y,1}$R=-2;#while(R<2)$I=-2;#while
(I<2)sphere{<R,I,4-eval_pattern(mandel 9,<R,I>
)>.01pigment{rgb y}}$I=I+.02;#end$R=R+.02;#end

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