Wasn't it nathan_2002 who wrote:
>The following is a scene of a narrow canyon. How do I get the groove do bend
>left or right, so I can see the canyon curve to the left and right(and set
>the bounding box smaller) ?

Do you mean something like

function {-pow(2,abs(x-(z*z/800)))+y-f_noise3d(x*5, y*5, z*5)*2
+2-f_noise_generator(x,y,z, 1)*2 } //open

The smaller the value (800 in the above) the tighter the curve, but if
you set it much smaller you have to move the camera so that it stays
outside the object.

-- 
Mike Williams
Gentleman of Leisure

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