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From dbn_3@yahoo.com:
I like the sky and the river.  I have not used teragen, so I don't know what's possible, but there are some things that strike me as "wrong."  The canyons I have seen are rarely this steep, and those that are still have thin beaches on the inside corners of the turns in the rivers.  I would expect to see a rocky beach on the shore in the mid right of the picture.  I would also like to see some rapids where the river is still cutting into the rock.
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From s.day@uel.ac.uk:

Nice picture but the bands on the rocks are a bit too uniform or there are just too many of them.
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From p_chan@shaw.ca:
The water looks good, although the waves don't really 
seem to suggest that it's flowing in any particular 
direction.  The terrain is also well done, although I find 
the layers a bit too uniform between the sections of the 
canyon.

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From jyrehby@hotmail.com:
Pros: Stunning photograph! (just kidding!!!). A true masterpiece! Modelling, choice of colors and textures, lighting, camera location, all are excellent. It's nice that you took the time to write a real short story to explain the picture. 
Cons: colors are slightly washed out, maybe a slight contrast/brightness correction would have been helpfull.  


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From file:
Notable for textures, lighting


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From file:
Nice concept and a beautiful composition. The texture in the mountains seems to be wrong (not horizontal).
Notable for composition, lighting, originality