This is amazing. The colouring and texture on the rock makes it seem so real. I like the colour palette as a whole, but theres something about the rails that bothers me...
Yes! I know! I thought Fool made it, too. 
You should be proud of yourself.
I remind that it is a piece) rails appear from the foreground so the prospect should be)
mmh but they should be in prospect if they were going to the horizon or if they were turning in "my" direction(are they?) or else they should not
This reminds me of Indiana Jones and the Fate of Atlantis, which is a very good thing to be reminded of. In general it's a nice piece, but the banding used on the tracks doesn't look very natural. Furthermore, they don't look parallel - they seem to be getting closer together as they approach the tunnel.
Some flaws with technique such as banding (Which has already been mentioned), but other than that it's really well done.
When I saw the prev, I thought fool made it.
Beautiful piece, congrats.
No, no) the palette is lifted for all level. There are defects in АА, but it not a final version of a scene.
ahh... finally,
now , if i wanna explain what banding is, i can just link back to this picture.... ^^
rly... change those rails... the rest looks fine, the cracks on the right need aa tho.... also the 'black' is too dark for my liking, or should be used more constant at least, seems like u for to lazy to use it on the left
Those rails make my eyes burn! But i love the rest of it. :D I think dithering is beautiful. <3
that's an awesome piece! 
P.S.: why is this in the weekly challenge?
Oh yes, I do like it. Has a certain... arcade game feel to it.
Awesome, only part I that is a bit bad are the tracks, banding hell.
I like the texture and color, especially the texture